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KCET2009PhysicsCurrent Electricity

The accurate measurement of emf can be obtained using

Options

  1. Amultimeter
  2. Bvoltmeter
  3. Cvoltameter
  4. Dpotentiometer

Correct answer

D. potentiometer

Step-by-step solution

In a potentiometer there is no current drawn from the cell whose emf is to be measured whereas a voltmeter always draws some current from the cell. Hence, the emf of a cell can be measured accurately using a potentiometer.

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