Physics 2017 JAMB Past Questions - Question 36: A transformation has 300 turns of wire in the primary coil and 30 turns in the secondary coil. IF the input voltage is 100 volts, the output voltage is

Correct Answer

A

Explanation

To determine the output voltage of the transformer, we can use the turns ratio between the primary and secondary coils. The turns ratio is given by the formula:

Turns ratio = Number of turns in the primary coil / Number of turns in the secondary coil

In this case, the turns ratio is:

Turns ratio = 300 turns / 30 turns = 10

The turns ratio represents the ratio of the input voltage to the output voltage. Therefore, if the input voltage is 100 volts, we can calculate the output voltage as follows:

Output voltage = Input voltage / Turns ratio
Output voltage = 100 volts / 10 = 10 volts

Therefore, the output voltage of the transformer is 10 volts.