The current strength in the conductor is 4 A, and its resistance is 10 Ohm, find the voltage at the ends of the conductor

The current strength in the conductor is 4 A, and its resistance is 10 Ohm, find the voltage at the ends of the conductor, the current power in the conductor, the work of the current in 3 minutes.

I = 4 A.

R = 10 ohms.

t = 3 min = 180 s.

U -?

N -?

A -?

The voltage at the ends of the conductor U is found according to Ohm’s law for the section of the circuit according to the formula U = I * R, where I is the current in the conductor, R is the resistance of the conductor.

U = 4 A * 10 Ohm = 40 V.

We express the work of the current A according to the Joule-Lenz law: A = I * U * t.

A = 4 A * 40 V * 180 s = 28800 J.

We find the current power by the formula: N = A / t.

N = 28800 J / 180 s = 160 W.

Answer: U = 40 V, A = 28800 J, N = 160 W.