The current strength in a conductor with a resistance of 100 ohms decreases uniformly

The current strength in a conductor with a resistance of 100 ohms decreases uniformly from 10 A to 0 in a time of 30 s. Determine the amount of heat released during this time in the conductor.

To solve this problem, you need to know Joule Lenz’s law. It sounds like this:

an electric current passing through a conductor is accompanied by an amount of heat directly proportional to the square of the current and resistance, as well as the time this current flows through the conductor.

In the form of a formula, we get:

Q = I ^ 2 * R * t,

where I is the current passing through the conductor

R – conductor resistance

t is the time of current flow through the conductor

Now we can calculate the amount of heat:

Q = 10 ^ 2 * 100 * 30 = 300,000 J.

Answer: 300,000 J.