Physics JAMB

When connected to a mains of 250V; the fuse rating in the plug of an electric device of 1 KW is?

A. 2 A
B. 3 A
C. 4 A
D. 5 A

Correct Answer:

Option C = 4 A

Explanation

1 KW = 1000 watts, power P = IV, thus for a mains of 250 V, the maximum permissible Current I = 1/V = 1000/250 = 4 A
Thus the fuse rating in the plug should be 4 A

Sunday

Share
Published by
Sunday
Tags: physics

Recent Posts

OOU JUPEB Admission For Agricultural Extension

Do you want to study Agricultural Extension in OOU? Before you apply for the OOU…

11 months ago

OOU JUPEB Admission For Agricultural Economics

Do you want to study Agricultural Economics in OOU? Before you apply for the OOU…

11 months ago

OOU JUPEB Admission For Cooperative and Business Management

Do you want to study Cooperative and Business Management in OOU? Before you apply for…

11 months ago

OOU JUPEB Admission For Home and Hotel Management

Do you want to study Home and Hotel Management in OOU? Before you apply for…

11 months ago

OOU JUPEB Admission For Animal Production

Do you want to study Animal Production in OOU? Before you apply for the OOU…

11 months ago

OOU JUPEB Admission For Crop Production

Do you want to study Crop Production in OOU? Before you apply for the OOU…

11 months ago