Determine the resistance of a section of the circuit if, at a voltage of 12 V, a charge of 30 C was passed

Determine the resistance of the circuit section if, at a voltage of 12 V, a charge of 30 C passed through this section in 15 seconds.

Given:

e = 30 Coulomb – the charge that passed through the section of the electric circuit during the time t;

t = 15 seconds – time interval;

U = 12 Volts – voltage at the section of the electrical circuit.

It is required to determine the resistance of the section of the electrical circuit R (Ohm).

Let’s find the strength of the current that passed through the section of the electrical circuit:

I = e / t = 30/15 = 2 Amperes.

Then, according to Ohm’s law, the resistance of the circuit section will be equal to:

R = U / I = 12/2 = 6 ohms.

Answer: the resistance of the section of the electrical circuit is 6 ohms.