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Consider the following statements:
(i) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil.
(ii) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.
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- (i) is true but (ii) is false
- (i) is false but (ii) is true
- both (i) and (ii) are true
- both (i) and (ii) are false
Correct Option: B
The compensating coil is made nearly identical with the current coil and is also coincident with the current coil and opposes the field produce by current coil.
The additional conduct or is an internal connections, corresponding to the lead from P to Q of Fig. (A), which carries the voltage-coil current in arever se direction through the winding. 
Thus any extra torque due to the voltage-coil current in the current coil itself is neutralized by the torque due to the voltage-coil current in the additional winding
