Question

Find out the following in the electric circuit given in the figure.

(i) Effective resistance of two 4Ω resistors in the combination

(ii) Current flowing through 4Ω resistor

(iii) Potential difference across 4Ω resistor

(iv) Power dissipated in 4Ω resistor

(v) Difference in reading of ammeter A, and A, (if any).

Answer 1

(i) The effective resistance of two 8Ω resistors

1/R = 1/8 + 1/8 = 2/8

R=4Ω

(ii) Current flowing through the circuit = current flowing through 4Ω 

(v) Both A₁ and A₂ show same reading because current remains same in series combination.