Question

An electric appliance has a rating of 1000W -200 V . The resistance of the element of electric appliance is : *
2 points
200 ohm
400 ohm
40 ohm
4000 ohm
​

Answer 1

$\huge\mathbb\orange{ANSWER}$

40 ohm

[tex]\huge\mathbb\orange{SOLUTION}[/tex]

Given :

⠀⠀⠀⠀⠀⠀⠀⠀ P = 1000 W

⠀⠀⠀⠀⠀⠀⠀⠀ V = 200 V

To Find :

⠀⠀⠀⠀⠀⠀⠀⠀R =?

Formulae :

⠀⠀⠀⠀⠀⠀⠀⠀P = V²

⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀R

R = V²

⠀⠀ P

R = (200)²

⠀⠀ 1000

R = 40