An electric iron is rated at 1000watts, 250v. The corresponding maximum resistance and accompanying current is
-
A.
62.5A, 4.0(Omega) -
B.
16.0A, 62.5(Omega) -
C.
62.5A, 16.0(Omega) -
D.
4.0A, 62.5(Omega) -
E.
4.0A, 250(Omega)
Correct Answer: Option D
Explanation
R = (frac{V^2}{R}) = IV ; R = (frac{V^2}{P}) and I = (frac{P}{V})
R = (frac{(250)^2}{100}) and I = R = (frac{1000}{250})
R = 62.5(Omega) and I = 4A