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Electricity

Question 2:

An electric lamp of 100 Ω, a toaster of resistance 50 Ω, and a water filter of resistance 500 Ω are connected in parallel to a 220 V source. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances, and what is the current through it?

Answer:

Resistance of electric lamp,

Resistance of toaster,

Resistance of water filter,

Voltage of the source, V = 220 V

These are connected in parallel, as shown in the following figure.

L...

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