Assertion ( A ): An electrostatic voltmeter is free from hysteresis and eddy current errors.
Reason ( R ): An electrostatic voltmeter has a number of fixed and moving vanes in parallel.
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true R is false
D. A is false R is true
Share your understanding of this question with the correct explanation.