Question

In the circuit shown, if the 10 Ω resistance is replaced by 20 Ω then what is the amount of current drawn from the battery ?

• A. 10 A
• B. 4 A
• C. 8 A
• D. 2 A

Answer 1

Answer: (B)

4 A

Answer 2

Q $\frac { 3 } { 8 }$ = $\frac { 9 } { 24 }$

bridge is balance

∴ On changing the resistance of bridge, current drawn will remain same.