Question

36. In the given circuit the current flowing through
the resistance 20 ohms is 0.3 ampere while the
ammeter reads 0.8 ampere. What is the value of R, ?
(A) 30 ohms
(C) 50 ohms
(B) 40 ohms
(D) 60 ohms​

Answer 1

Answer:

Explanation:30Ω

40Ω

50Ω

60Ω

Answer :

D

Solution :

V20Ω=VTotal

∴(20)(0.3)=(RTotal)(0.8)

:RTotal=304Ω

∴430=1R1+120+115

Solving we get R1=60Ω