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Current Electricity question

2013 · Shift 0 · Q62
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Current Electricity question

2013 · Shift 0 · Q62

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
The supply voltage to room is 120V.120V.120V. The resistance of the lead wires is 6Ω6\Omega6Ω. A 60W60W60W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240W240W240W heater is switched on in parallel to the bulb?
  1. A
    zero
  2. B
    2.92.92.9 Volt
  3. C
    13.313.313.3 Volt
  4. D
    10.0410.0410.04 Volt
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