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The emf of a source is equal to the potential difference across the terminals of the source when either its internal resistance is __________. (Zero, Infinite, Zero or infinite, None of these)

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Zero
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Tutor - Maths and computer science

Zero or infinite
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Math Educator for Std.11th ,12th , Engineering Entrance and Degree Level with 11+ Years Experience

Zero or infinite
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mathmagician

zero
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zero or infinite
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Quicker Maths

Zero or infinite
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zero
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Chemistry Specialist

Zero
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Zero or infinite
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M.Sc Electronics (communication science)

its internal resistance is zero.that is a constant volatage sorce.
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