Q-1: Two cells each of emf E and internal resistance r are connected parallel across a resistor R. The power dissipated in the resistor is maximum if
A. R = r
B. R = 3r/2
C. R = 2r
D. R = r/2
Answer:A
Q-1: Two cells each of emf E and internal resistance r are connected parallel across a resistor R. The power dissipated in the resistor is maximum if
A. R = r B. R = 3r/2 C. R = 2r D. R = r/2