ELECTROMAGNETISM

Question 1

what can moving charge create

Answer 1

changing electric field > changing magnetic field

Question 2

what is the right hand rule

Answer 2

1. place thumb in direction of current
2. grab wire
3. direction of current electric/magnetic field is the way fingers wrap around the wire

Question 3

what does charge experience when moving through a magnetic field

Answer 3

a force

Question 4

what is the equation that determines force acting on a charge (of a certain velocity) through a magnetic field

Answer 4

F = q x v x B x sin0

Question 5

breakdown the F = q x v x B x sin0 equation

Answer 5

force = charge x velocity x magnetic field x angle formed between velocity of charge and magnetic field

Question 6

how can you work out what waves have the highest energy

Answer 6

frequency x Planck’s constant

Question 7

what happens if a wave has a short wavelength

Answer 7

shorter wavelength = higher frequency = high energy

Question 8

what happens if a wavelength has a large wavelength

Answer 8

low frequency = low energy

Question 9

what are the visible colours from longest to shortest wavelength

Answer 9

ROY G BIV

Question 10

which colour from the rainbow has the longest wavelength

Answer 10

red has the longest wavelength, lowest frequency, and thus lowest energy