A galvanometer having full scale deflection current of $10mA$ and resistance $8Ω$ is joined in circuit as shown. When the terminals $A$ and $B$ are used and $C$ remains open, the range of the ammeter is $I.$ When the terminals $A$ and $C$ are used and $B$ remains open, then the range of the ammeter is

Question

A galvanometer having full scale deflection current of

10mA

and resistance

8Ω

is joined in circuit as shown. When the terminals

A

and

B

are used and

C

remains open, the range of the ammeter is

I.

When the terminals

A

and

C

are used and

B

remains open, then the range of the ammeter is

A galvanometer having full scale deflection current of 10mA and resistance 8Ω is joined in circuit as shown. When the

A galvanometer having full scale deflection current of 10mA and resistance 8Ω is joined in circuit as shown. When the

Quantrex Academy · Accepted Answer

Correct answer: B. (I)/(2)

When A and B is used Ig = (2 ⋅ I)/(2 + 10) When A and C is used Ig = 4 ⋅ I^ ′ 4 + 8 (2I)/(12) = (4I′)/(12) I^ ′ = (I)/(2)

A galvanometer having full scale deflection current of 10mA and...

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