Magnetic Field Intensity (H)

Question 1

What is magnetic field intensity (H)

Answer 1

measure of how strong a conductor’s magnetic field is at a particular point

Question 2

what affects the magnitude of H

Answer 2

distance - as distance from current carrying conductor increases, the magnitude of the magnetic field decreases

Question 3

method to find direction of H

Answer 3

right hand grip rule - if I is flowing upwards, H has anti-clockwise direction

Question 4

formula for relationship between I and H (formula sheet)

Answer 4

H = N * I/(2pir)
N = number of conductors
I = current
r = distance of point away i.e. radius

Question 5

how does number of conductors affect the H

Answer 5

N increases, more I carried, more H experienced around the r orbit.