Test SeriesFree PYQsExamsPricing

JEE Main 2013 Physics question

PhysicsCurrent ElectricityJEE Main 2013

The supply voltage to a room is 120 V. The resistance of the lead wires is 6 Ω. A 60 W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb?

Answer: (2)

Solution

Bulb 240 Ω, heater 60 Ω. Before: V. After

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-103820