Physics 5: Oscillators, Waves, Sound

Question 1

a particle’s orbit period is defined as

Answer 1

the time it takes for the particle to travel one full revolution, given by

T=2πr/v

for a period in a magnetic field, solve for v using the equation r=mv/qB and plug it in here.

Question 2

what are the conditions for when a magentic field exerts zero force?

Answer 2

1. particle is stationary
2. particle has no charge
3. particle moves parallel to field

Question 3

T/F: magnetic fields never do any work

Answer 3

true

Question 4

T/F: current is defined by movement of positive charges

Answer 4

true