Question

When 12 A current flows through a circuit connected to a battery
3 volts. When the current is flowing for 30 sec, calculate- a) R (resistance)
b) W (work done)
c) Q (electric charge)

Answer 1

Answer:

I = 12 A

V= 3 v

T = 30 s

R=?

We know

$\frac{v}{i} = r$

putting values given in the question.

3/12=R

R = 1/4

R = 0.25 Ohm

Q=?

we know

I = Q/T

after putting values

12=Q/30

Q= 12×30

Q= 360 Coulomb

W=?

we know

Voltage= work done / charge

after putting the values

3=W/360

W=3×360

W=1080 Joules