When an 8V battery is connected to a resistor, a 2 A current flows in the resistor. What is the resistor's value?

Question 5 options:

2 ohms

16 ohms

4 ohms

8 ohms

4 ohms

Explanation:

The relationship between potential difference and current in a resistor is given by Ohm's law:

where

V is the potential difference

R is the resistance

I is the current

In this problem, we have:

V = 8 V (potential difference across the resistor)

I = 2 A (current in the resistor)

Therefore, we can re-arrange the equation to find the resistance: