- #1
sridhar_n
- 85
- 0
A question,
I have a plastic disc with a coil wound around is axis of rotation. The coil carries current I. Now the disc carries charges at its circumference. Now the current flowing in the coil is brought to 0 instantaneously. This creates Electric Field to be produced that travel in concentric circles and induce a force on the charges and make them rotate. However, by law of conservation of momentum, the disc must not rotate. The question is, will the disc rotate or not?
Happy Solving...
Sridhar
I have a plastic disc with a coil wound around is axis of rotation. The coil carries current I. Now the disc carries charges at its circumference. Now the current flowing in the coil is brought to 0 instantaneously. This creates Electric Field to be produced that travel in concentric circles and induce a force on the charges and make them rotate. However, by law of conservation of momentum, the disc must not rotate. The question is, will the disc rotate or not?
Happy Solving...
Sridhar