Bulb B 1 100 W – 250 V and bulb B 2 100 W – 200 V are connected across 250 V . What is potential drop across B 2 ?

Question

Bulb B 1 100 W – 250 V and bulb B 2 100 W – 200 V are connected across 250 V . What is potential drop across B 2 ?, 200 V, 250 V, 98 V, 48 V

MARKS App · Accepted Answer

Resistance of bulb B 1 , R 1 = 250 2 100 = 625 Ω Resistance of bulb B 2 , R 2 = 200 2 100 = 400 Ω V R 2 = R 2 R 1 + R 2 × 250 = 400 625 + 400 × 250 = 98 V

Search any question & find its solution

Looking for more such questions to practice?