Electrostatics and electric circuits

Question 1

State the principle of conservation of charge

Answer 1

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

Question 2

State the principle of charge quantization

Answer 2

All charges in the universe consist of an integer multiple of the charge on one electron, i.e. 1.6 x 10(to the -19)

Question 3

What is polarisation?

Answer 3

The partial or complete polar separation of positive and negative electric charge in a system.

Question 4

Define Potential Difference across the ends of a conductor

Answer 4

The energy transferred per unit electric charge flowing through it

Question 5

Define EMF

Answer 5

The work done per unit charge by the source (battery). It is equal to the potential difference measured across the terminals of a battery when no charges are flowing in the circuit.

Question 6

Define terminal potential difference

Answer 6

The voltage measured across the terminals of a battery when charges are flowing in the circuit.

Question 7

Define current strength (I)

Answer 7

The rate of flow of charge

Question 8

Define one coulomb (C)

Answer 8

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

Question 9

Define resistance

Answer 9

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

Question 10

Define the unit of resistance

Answer 10

One ohm is equal to one volt per ampere