Revision on Electrical Systems

A path followed by an electric current

• open circuit
• flow
• current
• circuit

A complete electrical circuit or path through which electricity or current can pass or flow

• open circuit
• circuit
• closed circuit
• current

Material that allows electric current or thermal energy to pass through easily

• conductor
• insulator
• flow
• circuit

Material that slows down or stops electric current or thermal energy from passing through

• flow
• open circuit
• insulator
• conductor

The diagram below shows a battery. 
The parts X and Y are known as the _____________ of the battery respectively.

• north and south poles
• positive and negative terminals
• negative and positive terminals

When electricity passes through a bulb, the bulb produces ______________.

• heat energy only
• light energy only
• heat and light energy

The diagram below shows an electric bulb. If bulb A blows, how many bulbs will remain lit?

• 0
• 1
• 2
• 3

Voltage is measured in __.

• volts.
• watts.
• coulombs. 

As the resistance of a circuit increases, the current will

• increase
• decrease
• stay the same

Current has units: 

• kilowatt·hour 
• ampere 
• coulomb 
• volt