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.

By: |Published on: Aug 30|Categories: Physics WAEC| 0 comments

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

Users Also Read These:

SEE ALSO  The power of the lens is +2.5D. What is the radius of the curvature?

Copyright warnings! Do not copy.