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A student is recuired to measure emf of ...

A student is recuired to measure emf of a cell the should use .

A

Potentiometer

B

Voltmeter

C

ammeter

D

either (1) or (2)

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • A potentiometer can measure emf of a cell because:

    A
    the sensitivity of potentiometer is large.
    B
    no current is drawn from the cell at balance.
    C
    no current is drawn from the cell at balance.
    D
    internal resistance of cell is neglected.

  • The e.m.f. of a cell is a

    A
    unit vector
    B
    zero vector
    C
    scalar quantity
    D
    vector quantity

  • Back emf of a cell is due to

    A
    Electrolytic polarization
    B
    Peltier effect
    C
    Magnetic effect of current
    D
    Internal resistance