Question

An electric iron is rated 220V ,1 kW. Under normal working conditions , find the resistance?

Urgent!!!

Answer 1

Answer:

The answer is in the pic

Answer 2

$\mathtt{ \huge{ \fbox{Solution :)}}}$

Given ,

• Potential difference (V) = 220 Volt
• Electric power (P) = 1 kW or 1000 W

We know that ,

$\large \mathtt{ \fbox{Electric \: power = \frac{ {(V)}^{2} }{R} }}$

Substitute the known values , we get

1000 = (220)²/R

R = 48400/1000

R = 484/10

R = 48.4 ohm

Hence , the value of resistance is 48.4 ohm

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