Question

If the amount of current passing through a 12 Ohm resistor is 0.75 A, how much potential difference is
across the resistor? (1 point)

7V

9V

11 V

13 V

Answer 1

To find the potential difference (voltage) across a resistor, you can use Ohm's Law, which states that:

\[ V = I \times R \]

where:
- \( V \) is the potential difference (voltage) in volts (V),
- \( I \) is the current in amperes (A),
- \( R \) is the resistance in ohms (Ω).

In this case, you have:
- \( I = 0.75 \, \text{A} \)
- \( R = 12 \, \text{Ω} \)

Now, plug in the values:

\[ V = 0.75 \, \text{A} \times 12 \, \text{Ω} = 9 \, \text{V} \]

So, the potential difference across the resistor is **9V**.