This is an electric motor with a resistance of 20 Ohm connected to a network with a voltage of 220 V.

| June 23, 2021 | education

This is an electric motor with a resistance of 20 Ohm connected to a network with a voltage of 220 V. Determine the work of the current in the electric motor for 8 hours.

From the condition it is known that an electric motor with a resistance of 20 ohms is connected to a network with a voltage of 220 V. And we need to determine the work of the current in the electric motor for 8 hours of operation.

Let’s start by calculating the current in the network. To do this, we apply the formula for finding the current strength through the ratio of voltage to resistance:

I = U / R.

Substitute the values and calculate:

I = 220 V / 20 Ohm = 11 A.

To find a job, we use the formula:

A = U * I * t.

8 hours = 28,800 sec.

A = 220 V * 11 A * 28 800 sec = 69 696 000 J.



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