An electrical device has 50 turns in its primary coil and 20 turns in the secondary coil. The device can be a\an?
A
step-up transformer
B
step-down transformer
C
d.c generator
D
a.c generator
Verified Correct Answer: B.
Physical Principles & Numerical Solution
In a step down transformer, there are more turns in the primary coil than in the secondary coil and more current flows in the secondary circuit than in the primary.
Source: WAEC / JAMB / NECO Classroom Archive (Record #59388)