Question

Calculate d electric current in d gvn circuit when
A- key is open
B- key is closed

Answer 1

A)When the key is open the electric current flowing through circuit will be 0.

B)when the key is closed.

it wiil be
V=12v
R1+R2=4ohm+4ohm=8ohm

R3+R4=8ohm

1/Rs=1/8+1/8=2/8=1/4

Rs=4ohm.

I=V/R
=12/4=3amp.

Answer 2

A. If the key is open then the current will be 0 because it can't pass in a circuit.

B. If the key is closed

So, V=12v

R1+R2=8 ohm

R3+R4=8 ohm

Now equivalent resistance will be:1/8+1/8=2/8

Therefore, R=4 ohm.

I=V/R=12/4=3AMP.

Answers=3amp.