Question

Three resistors of 10 15 and 30 ohm are connected in parallel across a 100v supply the total current in the circuit is ?

Answer 1

GIVEN: P.D(V)=100V, R1=10, R2=15 and R3=30 to find I=?

SOLN: Rp=5 ohm(1÷Rp= 1÷R1 +1÷R2 +1÷R3)

V= 100Volt

we know that V= I×Rp

therefore

I=V÷r= 100÷5= 20A