Question

Two 5 k92, 5 W resistors in series have
equivalent resistance of 10 ks2 with power
rating of
(A) 2.5 W
(B) 5 W
(E) 10 W
(D) 25 W
​

Answer 1

Explanation:

equivalent resistance ,R = 10 K ohm

power = V² /r

V² = power x r = 5 x 5 x 10³

power rating = V² / equivalent resistance

= 5 x 5 x10³ / 10 x 10³

= 2.5 W

ans. a