Two devices of rating 44W, 220V and 11W, 220v V are connected in parallel. The combination is connected across a 440 V mains. The fuse of which two devices is likely to burn when the switch is ON?
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Answer. The fuse of device of rating 11W; 220V will burn. ∴ Resistance of 11W device will be four times then that of the device of 44w. 352V across the device of 11W ; 220V rating is sufficient to burn the fuse of the device
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Answer:
220V
Step-by-step explanation:
The fuse of the device of rating 11W; 220V will burn.
R = V2/W,
Resistance of 11W device will be four times than that of the device of 44W. The voltage across 11W: 352V
Voltage across 44W = 88V 352V across the device of 11W;
220V rating sufficient to burn the fuse of the device.
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