Electricity & Magnetism

Question 1

Magnetic field

Answer 1

A region in space where a magnet or ferromagnetic material will experience a (non-contact) force

Question 2

Law of conservation of charge

Answer 2

The net charge of an isolated system remains constant during any physical process

Question 3

Law of Charge Quatisation

Answer 3

All charges in the universe consist of an integer multiple of the charge on one electron

Question 4

Potential difference

Answer 4

The potential difference across the ends of a conductor as the energy transferred per unit of electric charge following through it

Question 5

Emf

Answer 5

The maximum energy provided by a battery per unit charge passing through it

Question 6

Electric current

Answer 6

The rate of flow of charge

Question 7

Resistance

Answer 7

The ratio of the potential difference across a resistor to the current in the resistor

Question 8

Ohm’s Law

Answer 8

The potential difference across a conductor is directly proportional to the current in the conductor at constant temperature

Question 9

Coulomb

Answer 9

One coulomb is defined as the charge transferred in a conductor in one second if the current is one ampere