Name an instrument used for measuring electric potential difference by drawing a diagram. Show
how this instrument is connected in an electric circuit. Why does this instrument practically not
consume any electric energy from the electric circuit?
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Answer: battery or cell
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(a). Voltmeter is used for measuring electric potential difference .
(b). Voltmeter is connected in parallel to the electric circuit .
(c). Voltmeter Does not consume electric energy because
- Its resistance is too high . In ideal case , the resistance is supposed to be infinity .
- It is connected in parallel . The flowing current to it is negligible due to the high resistance .
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