Question

Is it possible that any battery has some constant valur of emf, but the potential difference between the plates is zero?
A. Not possible
B. Yes, if another identical is joined in series
C. Yes, if another identical battery is joined in opposition
D. Yes, possible, if another similar battery is joined in parallel

Answer 1

Correct Answer - C
If an identical battery is connected in opposition, net emf = E - E = 0 and the current through circuit will be zero, although each one of them has constant emf.