A transformer is required to supply 12 Vrms to operate a toy train set from a 240 Vrms. If the number of turns in the secondary coil is 100, calculate the number of turns required in the primary coil

A. 5
B. 12
C. 2000
D. 2400

Correct Answer: Option A

A. 5

Explanation

Es/Ep = Ns/Np

=240/12 = 100/Np

Np = 5

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Tags: physics

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