P6 - ELECTRIC CIRCUITS - REVISION

Which type of the cirrcuit that the current has only one path to flow?

• Parallel
• Combination
• Series
• None above.

Which is the best description for a parallel circuit?

• Electricity flows along only one pathway.
• The flow of electricity comes from more than one source.
• Electricity flows more than one pathway.
• The flow of electricity comes from only one source.

What is one problem with using a series circuit?

• If one device goes down (is broken), all other device in the circuit cannot work.
• If one device goes down (is broken), all other device in the circuit still work normally.
• All devices take turn to turn on and off.
• There are no problems.

An appliance works normally at 3A. What is the best option for a fuse in the circuit connected to this appliance and why?

• 5A, so that the fuse does not blow when the appliance is used normally.
• 7A, since it allows a current much larger than needed for the appliance to flow in the circuit.
• 2A, so that the fuse blows when the appliance is used normally.
• 3A, since the fuse blows at the same value of current that the appliance needs

The current in a motor is 2.1 A and the potential difference across it is 12 V. The motor takes 1.5 seconds to lift a mass. What is the energy transferred to the motor as it lifts the mass?

• 85 J
• 38 J
• 8.5 J
• 3.8 J

Batteries and power plants are examples of ............

• Energy source
• Energy conductor
• Energy transformer
• Energy insulator

A complete, unbroken path that charges can flow through is called an ............

• Conductor
• Insulator
• Electric circuit
• Electric current

Circuits often include a _____________ to control (turn on and of) the flow of current.

• Resistor
• Bulb
• Voltmeter
• Switch

In a parallel circuit, which of the following quantities is the same for every divice in this circuit?

• Current
• Voltage
• Resistance
• Charge

An ammeter is a device that can be used to measure .............

• Voltage
• Resistance
• Current
• Power