Question

plz answer as soon as possible

Answer 1

The resistances of 80 ohm and Voltmeter are in parallel combination,

Thus, 1 / R' = 1/80 + 1/80

1 / R' = 2/80 = 1/40

R' = 40 ohm.........●

Now, R' and 20 ohm resistances are in series combination,

Thus, Total resistance of the circuit,

R = R' + 20

R = 40 + 20

R = 60 ohm.........●

Now, Current in the circuit,

I = E/R

I = 2 / 60

I = 1 / 30 Ampere.

Now,

Reading of Voltmeter =>

V = I × R'

V = ( 1/30 ) × 40

V = 40 / 30 = 4 / 3

V = 1.33 Volts.......●

Thus, Option 'C' is correct.

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Hope it was helpful.