A step-up transformer with 300 turns in the primary coil is supplied with 220 volts to this primary. How many secondary turns are needed to produce a 66,000 volt output?

Number of tuns in the secondary coil be 99000 volt.

Explanation:

Given that,

Number of turns in the primary coil,

Voltage of the primary coil,

Voltage of the secondary coil,

Let number of tuns in the secondary coil be . It can be calculated using the turn and voltage ratio. It is given by :

So, the number of tuns in the secondary coil be 99000 volt. Hence, this is the required solution.