Six dry cells each of e.m.f. 2.0 and internal resistance ...
Six dry cells each of e.m.f. 2.0 and internal resistance of 1.0Ω are connected in parallel across a load of 3.0Ω. Calculate the effective current in the circuit.
0.63A
0.50A
0.31A
0.22A
Correct answer is A
I = fn=16−2
I = vR+r=23+16=0.63A