Electricity

Question 1

Conductors

Answer 1

Conductors are materials that allow electrical currents to flow easily

Question 2

Good Conductors of Electricity

Answer 2

Metals
Graphite
Solutions
Molten Ionic Substances

Question 3

Insulators

Answer 3

Insulators are materials in which a current do not flow freely

Question 4

Semi-Conductors

Answer 4

Semi-conductors are materials with conductivity between that of good conductors and insulators

Question 5

Electric Circuits

Answer 5

An electric circuit is a complete path or loop through which electrons can flow from a source and then return to the source

Question 6

Direct Current

Answer 6

Flows in one direction only

Question 7

Alternating current

Answer 7

Reverses direction repeatedly

Question 8

Voltage

Answer 8

Electrical energy per unit charge used in driving the electrons through a circuit

Question 9

Current

Answer 9

Rate of flow of electrical charge through a circuit

Question 10

Resistance

Answer 10

The opposition to the flow of electrical current through a material

Question 11

Power

Answer 11

The rate of using energy

Question 12

Fuse

Answer 12

A fuse is a short wire that melts and breaks a circuit when the current exceeds a certain value

Question 13

Unit of Voltage (V)

Answer 13

Volt (V)

Question 14

Unit of Current (I)

Answer 14

Ampere (A)

Question 15

Unit of Resistance (R)

Answer 15

Ohm (Ω)

Question 16

Unit of Power (P)

Answer 16

Walts (W)