Question 36
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.
Objective
Question details
- Exam body
- WAEC
- Subject
- Physics
- Year
- 1999
- Question no.
- #36
- Type
- Objective
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