In the circuit diagram shown below, find:
(i) Total resistance.
(ii) Current shown by the ammeter A
(i) Let the total resistance of the circuit =R
As the connections are parallel. So the total resistance will be
1/R=1/R1+1/R2
R2=3+2=5ohms
R1=5ohms
1/R=1/5+1/5
1/R=2/5
R=2.5ohms
(ii) Current shown by the ammeter A will be equal to the current following in the circuit.
I=V/R=4/(2.5)
=1.6amps