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江苏南京29中致远校区　殷发金




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    【内容简介】
江苏南京29中致远校区　殷发金




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实验目的：
1．通过实验巩固电能表的使用。
2．会使用电能表测用电器在某段时间内消耗的电能。
3．会计算电水壶的加热效率。
4．通过实验认识到提高能源使用率的重要性。
实验原理：
使用电水壶烧水时，水吸收的热量有用的能量；消耗的电能是总能量；电水壶的效率等于水吸收的有用的能量与消耗的总电能之比。水吸收的热量可以利用Q=cm△t进行计算，只要测出加热前后水的温度及水的质量即可。消耗的电能可以借助于电能表测量。
实验器材：
电能表、鸣笛电水壶、天平、温度计。
实验步骤：
1．观察电能表的参数，并作记录。如电能表的适用的额定电压、电路消耗1kW·h的电能，转盘转动的圈数n。
2．利用天平称取质量为m（约3kg）的水，倒入电水壶中。
3．利用温度计测出此时水的温度，记为t0。
4．断开家中所有用电器，把电水壶接入电路中，同时开始记录电能表转盘转的圈数。
5．当电水壶鸣笛时，记录电能表转盘总共转的圈数，记为n0。
6．利用温度计测出此时水壶内水的温度为t。
7．计算出电水壶烧水时加热效率。
操作提示：
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江苏南京29中致远校区　殷发金




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&lt;P style="TEXT-ALIGN: left; LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal align=left&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;实验目的：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;1&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．通过实验巩固电能表的使用。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;2&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．会使用电能表测用电器在某段时间内消耗的电能。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;3&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．会计算电水壶的加热效率。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;4&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．通过实验认识到提高能源使用率的重要性。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;实验原理：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;使用电水壶烧水时，水吸收的热量有用的能量；消耗的电能是总能量；电水壶的效率等于水吸收的有用的能量与消耗的总电能之比。水吸收的热量可以利用&lt;SPAN&gt;Q=cm&lt;/SPAN&gt;△&lt;SPAN&gt;t&lt;/SPAN&gt;进行计算，只要测出加热前后水的温度及水的质量即可。消耗的电能可以借助于电能表测量。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;实验器材：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;电能表、鸣笛电水壶、天平、温度计。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="TEXT-ALIGN: left; LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal align=left&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;实验步骤：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;1&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．观察电能表的参数，并作记录。如电能表的适用的额定电压、电路消耗&lt;SPAN&gt;1kW&lt;/SPAN&gt;·&lt;SPAN&gt;h&lt;/SPAN&gt;的电能，转盘转动的圈数&lt;SPAN&gt;n&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;2&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．利用天平称取质量为&lt;SPAN&gt;m&lt;/SPAN&gt;（约&lt;SPAN&gt;3kg&lt;/SPAN&gt;）的水，倒入电水壶中。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;3&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．利用温度计测出此时水的温度，记为&lt;SPAN&gt;t&lt;SUB&gt;0&lt;/SUB&gt;&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;4&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．断开家中所有用电器，把电水壶接入电路中，同时开始记录电能表转盘转的圈数。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;5&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．当电水壶鸣笛时，记录电能表转盘总共转的圈数，记为&lt;SPAN&gt;n&lt;SUB&gt;0&lt;/SUB&gt;&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
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&lt;P style="TEXT-ALIGN: left; LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal align=left&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;实验目的：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;1&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．通过实验巩固电能表的使用。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;2&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．会使用电能表测用电器在某段时间内消耗的电能。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;3&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．会计算电水壶的加热效率。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;4&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;．通过实验认识到提高能源使用率的重要性。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;实验原理：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;使用电水壶烧水时，水吸收的热量有用的能量；消耗的电能是总能量；电水壶的效率等于水吸收的有用的能量与消耗的总电能之比。水吸收的热量可以利用&lt;SPAN&gt;Q=cm&lt;/SPAN&gt;△&lt;SPAN&gt;t&lt;/SPAN&gt;进行计算，只要测出加热前后水的温度及水的质量即可。消耗的电能可以借助于电能表测量。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;实验器材：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体"&gt;电能表、鸣笛电水壶、天平、温度计。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="TEXT-ALIGN: left; LINE-HEIGHT: 150%; TEXT-INDENT: 21.1pt" class=MsoNormal align=left&gt;&lt;B&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;实验步骤：&lt;/SPAN&gt;&lt;/B&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;1&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．观察电能表的参数，并作记录。如电能表的适用的额定电压、电路消耗&lt;SPAN&gt;1kW&lt;/SPAN&gt;·&lt;SPAN&gt;h&lt;/SPAN&gt;的电能，转盘转动的圈数&lt;SPAN&gt;n&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;2&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．利用天平称取质量为&lt;SPAN&gt;m&lt;/SPAN&gt;（约&lt;SPAN&gt;3kg&lt;/SPAN&gt;）的水，倒入电水壶中。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;3&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．利用温度计测出此时水的温度，记为&lt;SPAN&gt;t&lt;SUB&gt;0&lt;/SUB&gt;&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;4&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．断开家中所有用电器，把电水壶接入电路中，同时开始记录电能表转盘转的圈数。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;5&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．当电水壶鸣笛时，记录电能表转盘总共转的圈数，记为&lt;SPAN&gt;n&lt;SUB&gt;0&lt;/SUB&gt;&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;6&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．利用温度计测出此时水壶内水的温度为&lt;SPAN&gt;t&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
&lt;P style="LINE-HEIGHT: 150%; TEXT-INDENT: 21pt" class=MsoNormal&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;7&lt;/SPAN&gt;&lt;SPAN style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: black"&gt;．计算出电水壶烧水时加热效率&lt;SPAN&gt;&lt;SUB&gt;&lt;IMG src="PE.SiteConfig.ApplicationPathPE.SiteConfig.uploaddir/wldekt_UploadFiles_3742/201408/20140804215427260.gif" width=173 height=64 _fcksavedurl="/webpic/W0201406/W020140619/W020140619335337247680.gif" OLDSRC="W020140619335337247680.gif"&gt;&lt;/SUB&gt;&lt;/SPAN&gt;。&lt;/SPAN&gt;&lt;/P&gt;
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                <li><label>密　码：</label><input name="userpass" type="password" /></li>
                <li id="validateField"><label>验证码：</label><input name="validate" id="validateCode" type="text" /><span><img src="/Controls/ValidateCodeImage.aspx" class="validateSign" id="validateSign" title="换一个" align="absmiddle" /></span></li>
                <li class="check"><label><input name="saveinfo" type="checkbox" /><span>保持登录状态</span></label></li>
                <li class="login">
                    <img id="login" src="/Template/Default/Skin/MMskin/images/login.gif" alt="登录" align="absmiddle" /></li>
            </ul>
        </div>
        <div class="reg_info">
            <ul>
                <li>没有帐号？<a href="/User/Register.aspx" target="_blank" title="点此注册">点此注册</a></li>
                <li><a href="/User/GetPassword.aspx" target="_blank" title="忘记密码？">忘记密码？</a></li>
            </ul>
        </div>
        <div class="clear">
        </div>
    </div>
</div>

<!--弹出登录结束--> 
<!-- 这个是背景黑色半透明遮罩，不能包含弹窗，否则会出现弹窗透明现象 -->
<div id="bjtidu_ground" onclick="closeModel()"> </div>
<!-- 这个是用来展示弹框内容的 -->
<div id="login_model"><iframe name='LogOnFrame' id='LogOnFrame' src='' width='300' height='400' fullscreen=true download=false print=false openfile=false frameborder='no' border='0'></iframe></div>
<script>
    /* 打开弹出框的功能 */
   function openModel() {
        document.getElementById("bjtidu_ground").style.display = 'block';
        document.getElementById("login_model").style.display = 'block';
       // 禁止浏览器滚动
        document.body.style.overflow = 'hidden';
    }
    /**
    * 关闭弹出框的功能*/
    function closeModel() {
        document.getElementById("bjtidu_ground").style.display = 'none';
        document.getElementById("login_model").style.display = 'none';
        // 不遮挡后面的内容将body设置为原始样式，也就是实现可滚动
        document.body.style.overflow = 'auto';
    }

  $("#wxlog").click(function(){
    $("#LogOnFrame").attr("src","/qrconn.aspx");
  })

$(function(){
    var ua = navigator.userAgent.toLowerCase(); 
    if(ua.match(/iPad/i)=="ipad" || ua.match(/Mobile/i)=="mobile") { 
     $("#wxlog").hide();
    }
    else{
    }
})
</script>
<script type="text/javascript" src="/Template/Default/Skin/MMskin/js/tools.js"></script>
<script>
(function(){
    var bp = document.createElement('script');
    var curProtocol = window.location.protocol.split(':')[0];
    if (curProtocol === 'https') {
        bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
    }
    else {
        bp.src = 'http://push.zhanzhang.baidu.com/push.js';
    }
    var s = document.getElementsByTagName("script")[0];
    s.parentNode.insertBefore(bp, s);
})();
</script>


{PE.Label id="A评论标签" nodeId="{PE.Field id="cone" fieldname="NodeID" /}" /}
</body>
</html>