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Electricity

Question 13:

A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistances, which may be used separately, in series, or in parallel. What are the currents in the three cases?

Answer:

Supply voltage, V = 220 V

Resistance of one coil, R =

(i) Coils are used separately

According to Ohm’s law,

Where,

is the current flowing through the coil

Therefore, 9.16 A current will flow through the coil when...

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