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In Physics / College | 2025-07-03

A 100 W heater is connected to a 240 V mains supply. Calculate the:
(i) current drawn;
(ii) resistance of the heater.

Asked by alicebarnes065

Answer (2)

The current drawn by the 100 W heater connected to a 240 V supply is approximately 0.42 A. The resistance of the heater is about 574.2 ohms. These calculations are based on Ohm's Law and the power formula for electrical circuits.
;

Answered by Anonymous | 2025-07-04

watts = amps * volts
100 W = A * 240
100/240 = A **= .417 Amperes **
V = I * R
240 = .417 * R
** R = 576 Ω** ;

Answered by jsimpson11000 | 2025-07-05

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