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Grade 12th PassDiscuss with colleagues and IITians

How could i limit the wall socket power consumed by an appliance (for example a 2 kW bar heater limited to 1 kW)?

Vikas TU

11 Years agoGrade 12th Pass

1 Answer

TEJKIRAT SINGH

Approved Tutor Answer11 Years ago

Both answers are wrong so far. Using a diode will cut the POWER by much more than half besides feeding pulsed DC in to the system.
And just using a variable or fixed transformer at half AC voltage will not just POWER in half.
Power = E I, so it seems as though 1/2E would cut the power, but lowering the voltage also lowers the current, so 1/2E would be 1/4 Power.
Heater bars are cheaper than 2KW transformers, especially variable, so advice to get a new heater bar is a good one.

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