Electric fields

Question 1

Coulomb’s law

Answer 1

The force acting between two charged bodies is inversely proportional to the square of the distance between them and directly proportional to the product of the magnitude of the two charges.

Question 2

Electric field

Answer 2

A region of space where charged particles feel a force

Question 3

Electric field strength meaning

Answer 3

The force per unit positive charge.

Question 4

Direction of an electric field at a point

Answer 4

The direction of the force on a positive charge put at this point

Question 5

Electric field lines

Answer 5

Point in the direction of the force acting on a positive charge placed in the field

Question 6

In a uniform field, force acting on a charge will be…..

Answer 6

The same at every point in the field

Question 7

Electric field strength inside a hollow sphere of charge

Answer 7

0NC⁻¹

Question 8

Electric field strength at a point

Answer 8

The work done per unit charge in taking a small positive charge from infinity to that point.

Question 9

JC⁻¹

Answer 9

V

Question 10

Electric potential energy (equation)

Answer 10

qΔV
Work done in taking charge q through a pd of ΔV

Question 11

What did Millikan’s oil drop experiment determine?

Answer 11

The size of the charge on an electron

Question 12

Millikan’s oil drop experiment