Question

(i) Forty electric bulbs are connected in series with the mains of a 220V. After one bulb is fused,
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Answer 1

Answer:

Explanation:

SINCE ,THE BULBS ARE CONNECTED IN SERIES IF ONE OF THE BULB GET FUSED NONE OF THE BULBS WILL NOT GLOW ANYMORE.

AS IN SERIES CONNECTION THE CURRENT RECEIVED BY ALL THE BULBS ARE THE SAME AND IF ONE OF THE BULB IS FUSED NO MORE CURRENT PASSES  THROUGH THE CIRCUIT.

IF THEY WERE CONNECTED IN SERIES , ALTHOUGH IF ONE OF THE BULB GETS FUSED ALL OTHER BULBS WILL GLOW WITH THE SAME VOLTAGE .

THIS IS THE ADVANTAGE OF PARALLEL  CONNECTION OVER SERIES AND THIS IS THE REASON WHY PARALLEL CONNECTIONS ARE PREFERED IN HOUSES.

HOPE THIS HELPS.