The supply voltage to a room is 120 V.The resistance of the lead wires is 6 ohm.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?

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karuna Yadav · Answer

i guess there will be no voltage drop but there will be increase in current

Sona Sheril Antony · Answer

When two or more appliances are connected in parallel,the current gets divided between them. But the voltage across both the appliances will be same as the supply voltage. Therefore, there wont be any decrease in voltage across the bulb.

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The supply voltage to a room is 120 V.The resistance of the lead wires is 6 ohm.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?

The supply voltage to a room is 120 V.The resistance of the lead wires is 6 ohm.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?

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The supply voltage to a room is 120 V.The resistance of the lead wires is 6 ohm.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?

The supply voltage to a room is 120 V.The resistance of the lead wires is 6 ohm.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?

2 Answers

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