Is it possible to connect a rheostat to a network with a voltage of 220 V on which it is written: 6 Ohm, 5A

Given:

U = 220 Volts – voltage in the electrical network;

R = 6 Ohm – resistance of the rheostat;

I = 5 Amperes – the current strength for which the rheostat is designed.

It is required to determine whether it is possible to connect the rheostat to an electrical network with a voltage of U.

Let’s find the value of the current that will be in the electrical circuit when a rheostat is connected to it:

I1 = U / R = 220/6 = 36.6 Amperes (the result is rounded to one decimal place).

Since I1> I (36.6> 5), this means that the rheostat cannot be connected to this network.

Answer: the rheostat cannot be connected to a 220 volt network.