Apply: The light bulb is also a resistor. Place the light bulb in the circuit, then use Ohm’s law to find the resistance of the light bulb. What is it?

Question

V = 30, l = 2

Answer 1

First, let's clarify the given values:

V = 30 (this represents the voltage across the light bulb in the circuit)
I = 2 (this represents the current flowing through the light bulb in the circuit)

Now, we can apply Ohm's law to find the resistance of the light bulb:

Ohm's Law: V = I * R

Substitute the given values:
30 = 2 * R

Divide both sides by 2 to solve for R:
R = 30 / 2
R = 15

Therefore, the resistance of the light bulb is 15 ohms.