Question

Three resistors R1,R2 and R3 are connected in parallel and the combination is connected to battery,ammeter,voltmeter and key.draw suitable circuit diagram.
(a) obtain an expression for the effective resistance of the combination of resistors in parallel.
(b) why are electric bulbs filled with chemically inactive nitrogen or argon?
(c) what is meant by the statement that the rating of a fuse in a circuit is 5A?

Answer 1

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