Question

A transformer has an input voltage of 200 V and an output voltage of 60 V. The output from the secondary coil is used to light up a lamp with resistance of 15 Ω. If the efficiency of the transformer is 80%, the primary current is ….
a)2.0 A
b)1.2 A
c)1.5 A
d)3.0 A

Answer 1

Answer:

c)1.5 A

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Answer 2

Answer:

c)1.5 A

Explanation:

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