contestada

Stu wanted to calculate the resistance of a light bulb connected to a 4.0 V battery, with a resulting current of 0.5 A. He used the formula R = VI and obtained an answer of 2 Ω. Was Stu’s answer correct? How do you know?

Respuesta :

His answer was incorrect because according to ohm's law the formula used should have been R=V/I instead of multiplying and the answer should be 8ohms
asuwafohjames

The resistance of the light bulb is 8 Ω.

To calculate the resistance of the light bulb, we use the formula below.

Formula:

  • R = V/I................... Equation 1

Where:

  • R = Resistance of the light bulb
  • V = Voltage applied to the light bulb
  • I = Current flowing in the light bulb.

From the question,

Given:

  • V = 4.0 V
  • I = 0.5 A

Substitute these values into equation 1

  • R = 4/0.5
  • R = 8 ohms.
  • R = 8 Ω

Hence, the resistance of the light bulb is 8 Ω.

Learn more about resistance here: https://brainly.com/question/13735984

Otras preguntas