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Physics problem-rheostat
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<blockquote data-quote="viorelflower" data-source="post: 468365" data-attributes="member: 29020"><p>I had a problem in physics but I never learned anything about it in highschool.We passed this lesson with no idea what a rheostat does or is.</p><p> Can someone explain me?I hope that you learned this during your training as an electrician because I never learned that.</p><p> Well if I still have the problem I will show you the details:</p><p> E=15v,r=5 ohms,R(AB)=40 ohms,Resistor of Ampmeter is 0.</p><p> Calculate:</p><p> a)ampmeter indication when the cursor C is in the position B</p><p> b)rheostat voltage between points A and M when the cursor C is on the position M</p><p> c)voltage of every battery supply(E,r) when cursor C is on the position M</p><p> d)indication of the ampmeter when one of the batteries is polarized inverse.</p><p> I have no idea how to solve this.Can someone explain to me by solving this problem?</p><p></p><p>[ATTACH]9469[/ATTACH]</p></blockquote><p></p>
[QUOTE="viorelflower, post: 468365, member: 29020"] I had a problem in physics but I never learned anything about it in highschool.We passed this lesson with no idea what a rheostat does or is. Can someone explain me?I hope that you learned this during your training as an electrician because I never learned that. Well if I still have the problem I will show you the details: E=15v,r=5 ohms,R(AB)=40 ohms,Resistor of Ampmeter is 0. Calculate: a)ampmeter indication when the cursor C is in the position B b)rheostat voltage between points A and M when the cursor C is on the position M c)voltage of every battery supply(E,r) when cursor C is on the position M d)indication of the ampmeter when one of the batteries is polarized inverse. I have no idea how to solve this.Can someone explain to me by solving this problem? [ATTACH]9469._xfImport[/ATTACH] [/QUOTE]
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