Question

2. An Electric iron is rated 1000W, 240V. Find the current drawn and resistance of the heating element

Answer 1

Answer:

$\huge\mathcal{\pink{answer = 4.1 \: \: ampere}}$

by using the formula of power.

$p = v \times i$

$\frac{p}{v} = i$

$i = \: \frac{1000}{24}$

$i = 4.1 \: ampere$

The current will be 4.1 ampere

Answer 2

1) Power = Voltage * Current


2) Power = (Current)^2 * Resistance


Using 1st formulae to find the current.


Power = Voltage * Current
1000 = 240 * Current
Current = 1000/240
Current = 4.1667 Ampere.


Using 2nd formulae to find the resistance.


Power = (Current)^2 * Resistance
1000 = (4.1667 * 4.1667) * Resistance
1000 = (17.3614) * Resistance
Resistance = 1000/17.3614
Resistance = 57.6 ohm.