Physicsmedium · Past Paper
Calculate the resistance of a lamp that draws 0.5 A current from a 220 V source.
A110 Ohms
B220 Ohms
C440 Ohms
D550 Ohms
✓ Correct Answer: C — 440 Ohms
Using R = V / I: R = 220 / 0.5 = 440 Ohms.
Share this question
More from Physics
- If a body is moving with a constant velocity of 10 m/s, how far will it travel in 1 minute?
- A athlete completes one round of a circular track of diameter 200m in 40s. What will be the distance covered at the end of 2 minutes 20s?
- The relationship between SI unit and CGS unit of work is:
- A hydraulic lift has pistons of radii 1cm and 10cm. What is the force multiplier?
- A body of mass 10 kg is falling freely. What is the force acting on it? (take g=9.8 m/s^2)