Question

A transformer supplies 60 watts of power to a device that is rated at 20 volts. The primary coil is connected to a 120-volt ac source. What is the current I1I1I_1 in the primary coil

Answer 1

The current in the primary coil would be
`0.5\ A`.

Step-by-step explanation:

Given the power supplied by a transformer is 60 watts.

And the voltage in the primary coil is 120 Volts.

We need to find the current supply in the primary coil.

We will use the formula

`P=V* I`

Where,

`P` is the power in Watts.

`V` is the voltage in Volts.

`I` is the current supply in Ampere.

`I=(P)/(V)\\\\I=(60)/(120)\\ \\I=0.5\ A`

So, the current in the primary coil would be
`0.5\ A`.