You\'re holding a simple loop of wire as you stand in the middle ofan open field
ID: 1678367 • Letter: Y
Question
You're holding a simple loop of wire as you stand in the middle ofan open field (no electrical devices are anywhere near). As youwave the loop around randomly, turning and twisting it, you willinduce tiny currents in the loop but if you move the loop withoutturning or twisting it (no change in its orientation) you won'tinduce any current. Explain this.My assumption is that there is just no B field lines felt at theoriginal position but when the loop is moved there are B fieldlines present in those locations, and current is induced. Is mythinking right?
Explanation / Answer
current is induced in a loop of wire when magnetic flux passingthrough it changes i.e. the no of magnetic filed lines passingthrough it changes. on turning and twisting it the number of lines passing through itchanges so current induces in it. But since when we move the loopwithout turning or twisting it and without changing its orientationthe number of field lines passing through it wont change so nocurrent will be induced .
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