Question on: WAEC Physics - 1999
The voltage and current in the primary of a transformer are 200V and 2Arespectively. lf the transformer is used to light ten 12 V, 30 W bulbs, calculate its efficiency.
A
100%
B
90%
C
75%
D
50%
Ask EduPadi AI for a detailed answer
Correct Option: C
Add your answer
Please share this, thanks!
No responses