Question

18) In the given circuit diagram, calculate the (i) ammeter reading and (ii) voltmeter reading.
(3)
V
A 10 B 39 C 20 D
3V
K
How would the reading of voltmeter (V) change, if it is connected between points C and D?​

Answer 1

Explanation:

According to the given circuit, R

eq

=100+

200+100

200×100

=500/3

I=

500

5X3

=

100

3

Amp

Voltmeter (having 200 ohm resistance) and the 100 ohm resistance are parallel to each other therefore,

I

100

×100=I

200

×200

I=I

100

+I

200

On solving, I

200

=I/3

V=

100

3

*

31 × 200=2 Volts. Hence V=2 Volts