Question

Find the current drawn from the 5 V battery by the combination of

resistors​

Answer 1

Answer:

The equivalent wheat stone bridge for the given combination is shown in figure alongside.

The resistance of arm ACD,RS

1

=10+20=30Ω

Also, the resistance of arm ABD,R

S2

=5+10=15Ω

Since the condition

Q

R

=

S

R

is satisfied, it is a balanced bridge.

No current flows along arm BC.

∴ Equivalent resistance

R

s

+R

s

2

R

S

1

×R

S

2

=

30+15

30×15

=

45

30×15

Current drawn from the source,I=l=

R

V

=

10

5

=

2

1

A=0.5A