E.m.f. of a Weston cell is accurately measured by
A. electrostatic voltmeter
B. hot wire voltmeter
C. isothermal voltmeter
D. electrodynamic voltmeter
Answer:A
E.m.f. of a Weston cell is accurately measured by
A. electrostatic voltmeter B. hot wire voltmeter C. isothermal voltmeter D. electrodynamic voltmeter