when a 240W heater is switched on ?

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The main supply voltage to room is 120V. The resistance of the lead wires is 6Ω. A 60W bulb is already giving light. What is the decrease of voltage across the bulb, when a 240W heater is switched on ?
06
Dec
The main supply voltage to room is 120V. The resistance of the lead wires is 6Ω. A 60W bulb is already giving light. What is the decrease of voltage across the bulb, when a 240W heater is switched on ? The main supply voltage to room is 120V. The resistance of the lead wires is [...]
Posted in: Cengage JEE Mains Physics by B.M Sharma , Chapter 20 - Heating Effects of Current and Instruments ,
Tags: The main supply voltage to room is 120V. The resistance of the lead wires is 6Ω. A 60W bulb is already giving light. What is the decrease of voltage across the bulb , when a 240W heater is switched on ? ,