Physics WAEC

In the diagram below, three identical lamps each of 100 W are connected in parallel across a potential difference of 250 V. Calculate the reading of the ammeter.

A. 7.5A
B. 2.5A
C. 1.2A
D. 0.8A
E. O.4A

Correct Answer:

Option C – 1.2A

Explanation

P = VI ; I = P/V = 100/250 = 0.4A each

Total current 3 x 0.4 = 1.2A

SEE ALSO Which of the following is a reason why a concrete floor feels colder to the bare feet than a mat on the same floor during the rainy season?
Sunday

Share
Published by
Sunday
Tags: physics
4 years ago

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