A current of 7.4 A flows through a conductor.
Calculate how much charge passes through any
cross-section of the conductor in 20 s.

To calculate the amount of charge (\( Q \)) that passes through any cross-section of the conductor, you can use the relationship between current (\( I \)), charge (\( Q \)), and time (\( t \)):

\[
Q = I \times t
\]

Where:
- \( I = 7.4 \, \text{A} \) (current)
- \( t = 20 \, \text{s} \) (time)

Now, plug in the values:

\[
Q = 7.4 \, \text{A} \times 20 \, \text{s} = 148 \, \text{C}
\]

So, the amount of charge that passes through the cross-section of the conductor in 20 seconds is **148 coulombs**.

Would you like any details or have any questions?

Here are 5 related questions:
1. How is electric current related to the flow of electrons in a conductor?
2. What is the difference between direct current (DC) and alternating current (AC)?
3. How does resistance affect the current in a circuit?
4. How can you calculate the total charge passing through a conductor in a given time if the current varies?
5. What are the practical applications of calculating charge in electrical circuits?

**Tip:** Always ensure that the units of current and time are consistent when calculating charge.

Learn how to calculate the charge passing through a conductor when a current of 7.4 amperes flows for 20 seconds. Understand the relationship between electric current, charge, and time with a detailed solution.

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