In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of the resistor R will be
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a)
200
b)
100
c)
500
d)
1000
a)
200
b)
100
c)
500
d)
1000
Question ID - 150485 | SaraNextGen Top Answer In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of the resistor R will be
a)
200
b)
100
c)
500
d)
1000
In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of the resistor R will be
|
a) |
200 |
b) |
100 |
c) |
500 |
d) |
1000 |
1 Answer
127 votes
Answer Key / Explanation : (b) -
(b)
The galvanometer shows zero deflection 
, current through XY is zero.
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As a result potential drop across R is 2V, circuit can be redrawn as
.png)
Voltage across R, 
127 votes
Answer Link
127