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Physics
In an ideal transformer the number of turns of primary and secondary coil is given as 100 and 300 respectively. If the power input is 60 W, the power output is
Q. In an ideal transformer the number of turns of primary and secondary coil is given as 100 and 300 respectively. If the power input is 60 W, the power output is
2881
222
JIPMER
JIPMER 2012
Alternating Current
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A
100 W
3%
B
300 W
3%
C
180 W
46%
D
60 W
49%
Solution:
Efficiency of a transformer,
η
=
Power input
Power output
For an ideal transformer,
η
= 1
∴
Power output = Power input = 60 W