Question

1. Answer the following questions :
38. In given circuit diagram suppose the resisters R1, R2 and R3 are the values 5, 10, 10 respectively,
which have been connected to a battery 12v. Calculate
a) the current through each resistor. b) The total current in the circuit and
c) The total circuit resistance.
​

Answer 1

(a)As all the resistances are in parallel the voltage across each of them will be same =12V

I

1

=

R

1

V

=

5

12

=2.4A

I

2

=

R

2

V

=

10

12

=1.2A

I

3

=

R

3

V

=

30

12

=0.4A

(b) Total current= I

1

+I

2

+I

3

=2.4+1.2+0.4=4A

(c) Total circuit resistance =

Total current

V

=

4

12

=3Ω

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