Light bulb is rated 3.0V/1.5W. The right wire of the circuits, which is 10 cm long, is pulled across with a constant speed v through a perpendicular magnetic field of strength 0.10 T. (a) What speed must the wire have to light the lightbulb at its full brightness? (b) What force is needed to keep the wire moving?

Heergerneuu

Heergerneuu

Answered question

2022-09-22

Light bulb is rated 3.0   V / 1.5   W. The right wire of the circuits, which is 10 cm long, is pulled across with a constant speed v through a perpendicular magnetic field of strength 0.10 T.
(a) What speed must the wire have to light the lightbulb at its full brightness?
(b) What force is needed to keep the wire moving?

Answer & Explanation

Katelyn Ryan

Katelyn Ryan

Beginner2022-09-23Added 11 answers

(a) speeds
E = B L v
v = E B L = 3 ( 0.1 ) ( 0.1 )
v = 300  m/sec
(b) F = P v
F = 1.5 300 = 5 × 10 3 N

Do you have a similar question?

Recalculate according to your conditions!

New Questions in Advanced Physics

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?