Question

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

Answer 1

Answer: 4 ohms

Step-by-step explanation:

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

`V=RI`

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:

`R=(V)/(I)=(8)/(2)=4 \Omega`