An electrical heater is labelled 120W, 240V. Calculate; a) The current through the heating element when the heater is on. b) The resistance of the element used...

An electrical heater is labelled 120W, 240V. Calculate;
a) The current through the heating element when the heater is on.
b) The resistance of the element used in the heater.

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(a)

Electrical power P = VI
120 = 240I
thus, I = 120/240
= 0.5A

(b)
From Ohm’s law
V= 1R
R= V/J
= 240/0.5 = 480O

The resistance of element = 480O

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Wilfykil answered the question on March 26, 2019 at 13:31

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