[" 231.Potentiometer measures the potential difference more "],[" accurately than a voltmeter,because "],[(a)" It does not draw current from external circuit."],[" (b) It draws a heavy current from external circuit."],[" (c) It has a wire of low resistance."],[" (d) It has a wire of high resistance."]

A. Potentiometer measures the potential difference more accurately than a voltmeter, because the potentiometer a. does not draw current from external circuit. b. has a wire of high resistance. c. draws a heavy current from external circuit. d. has a wire of low resistance. B. With the help of a diagram explain the principle of a potentiometer.

Assertion A potentiometer is preferred over that of a voltmeter for measurement of emf of a cell Reason potentiometer does not draw any current from the cell.

Assertion A potentiometer is preferred over that of a voltmeter for measurement of emf of a cell Reason potentiometer does not draw any current from the cell.

Assertion : Potentiometer is used only to compare potential differences. Reason: The potentiometer draws current from the voltage source being measured .

Assertion : Potentiometer is used only to compare potential differences. Reason: The potentiometer draws current from the voltage source being measured .

In the given circuit, calculate - (a) the total resistance of the circuit, (b) the current through the circuit, and (c) the potential differences across R_(1) and R_(2)

In the given circuit, calculate - (a) the total resistance of the circuit, (b) the current through the circuit, and (c) the potential differences across R_(1) and R_(2)