Home
Class 12
PHYSICS
In the given circuit in which case will ...

In the given circuit in which case will the ammeter reading not change when `R_2` is varied?

A

`R_1= r`

B

`R_1 = 2r`

C

`R_1gtR_2`

D

`r =0`

Text Solution

Verified by Experts

The correct Answer is:
D
d. When r = 0 the terminal potential difference in the arm
containing `R_1` remains unchanged, so the ammeter reading does
not change.
Promotional Banner

Similar Questions

Explore conceptually related problems

The ammeter reading in the given circuit is

In the series L-C-R circuit , the voltmeter and ammeter readings are

In the series L-C-R circuit , the voltmeter and ammeter readings are

The ammeter reading in the given circuit of Fig . is -

In the circuit shown here, the readings of the ammeter and voltmeter are

In the given circuit if R_1 is increased without disturbing the bias or changing R_2 then

The figure shows a circuit. When the circuit is switched on, the ammeter reads 0.5A. Calculate the power dissipated in the 3Omega resistor.

In the circuit shown in the figure, the ideal ammeter reading for current is taken ( a ) with both switches open ( b ) with both switches closed. The readings are same in the cases. The value of resistance R is

In the given circuit , when key K is open, reading of ammeter is I. Now key K is closed, then the correct statement is

In the circuit shown in figure, reading of ammeter will