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Domestic Electric Circuits

Calculate the...

Question

Calculate the current flowing through 1.5 kW-250 V electric heater.

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Solution

P = V $\times$ I
$\Rightarrow$ 1500 = 250 $\times$ I
$\Rightarrow I = \frac{1500}{250}$ = 6 A

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Calculate the current flowing through 1.5 kW-250 V electric heater and also find its resistance. [3 MARKS]

Calculate the current flowing through 1.5 kW-250 V electric heater and also find its resistance.

An electric heater is rated 1000 W-200 V. The current flowing through the heater is:

Q. An electric heater of power

1000

watt is joined to electric mains of

250

volt. Calculate:
(i) Electric current flowing through heater
(ii) Resistance of heater wire
(iii) Thermal energy produced per minute by heater
(iv) The electric energy spent in Kilowatt-hour by heater in

2

Q. If an electric heater consumes electricity at the rate of

500 W

and the potential difference between the two terminals of the electric circuit is

250 V

, calculate the electric current passing through the heater and resistance of it respectively.

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