Year: 2024
Topic: Electromagnetic induction
Time :
1.
In an ideal transformer, the turns ratio is \(\frac{N_P}{N_S} = \frac{1}{2}\). The ratio \(V_S : V_P\) is equal to (the symbols carry their usual meaning) :
(1). 1 : 2
(2). 2 : 1
(3). 1 : 1
(4). 1 : 4