6- Fields and Forces

Question 1

Coulomb’s law (equation 1)

Answer 1

F = kq1q2/r^2

Question 2

Electric field strength (equation)

Answer 2

E = F/q

Question 3

Coulomb’s law (equation 2)

Answer 3

F = kq1q2/4πε0r^2

Question 4

Coulomb’s law (definition)

Answer 4

The electrostatic force between any two point charges masses is proportional the product of the charges and inversely proportional to the square of their distance of separation.

Question 5

Gravitational field strength at planet surface

Answer 5

g = GM/r^2 (r is planet’s radius)

Question 6

Direction of magnetic field

Answer 6

The direction of the force that would be felt by the north pole of a small test magnet if placed at that point

Question 7

Gravitational field strength (definition)

Answer 7

The force per unit mass on a test point mass

Question 8

Electric field strength (definition)

Answer 8

the force per unit charge on a test point charge placed at that location

Question 9

Gravitational field strength (equation)

Answer 9

g = F/m

Question 10

Magnetic force on moving charge

Answer 10

F = qvBsinθ

Question 11

Magnetic force on current

Answer 11

F = BILsinθ