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Electricity

Question 12:

Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?

Answer:

Resistance R1 of the bulb is given by the expression,

Where,

Supply voltage, V = 220 V

Maximum allowable curr...

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