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Electrical Current Types Quiz

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Questions and Answers

What type of current flows in one direction only?

Reversed current

Alternating current

Mains current

Direct current (correct)

The UK mains electrical supply operates at a frequency of 60 Hz.

False (B)

What is the voltage of the mains electrical supply in the UK?

230 V

Power stations produce electricity using __________, providing an alternating current.

<p>magnets</p> Signup and view all the answers

Match the following terms with their descriptions:

<p>Direct Current (dc) = Electrically charged particles flow in one direction Alternating Current (ac) = Current that regularly changes direction and size Voltage = The electric potential difference between two points Frequency = The number of waves produced each second</p> Signup and view all the answers

Flashcards

Electric current

The movement of electrically charged particles, such as electrons moving through a wire or ions moving through a solution.

Direct current (DC)

An electric current that flows in one direction only.

Alternating current (AC)

An electric current that regularly changes its direction and size.

Frequency

The number of waves produced each second. Unit: Hertz (Hz)

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Mains electrical supply

The electrical supply found in homes, shops, offices, and factories. In the UK, it's 230 V with a frequency of 50 Hz.

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Study Notes

Electrical Current Types

Electricity flows as either direct current (DC) or alternating current (AC).
DC flows in one direction only, shown as a straight horizontal line on a voltage-time graph.
AC changes direction and size regularly, graphed as a curve alternating between positive and negative voltages.

Direct Current Sources

Car batteries, dry cells, and solar cells produce DC.

Alternating Current Sources

Power stations generate electricity using magnets, producing AC.
The UK's mains electrical supply is AC.

Main Electrical Supply Details

UK mains supply is 230 Volts (V).
The frequency of the UK mains supply is 50 Hertz (Hz).

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Description

Test your knowledge on the two main types of electrical currents: direct current (DC) and alternating current (AC). Explore various sources of each type and learn about the specifics of the UK mains electrical supply. This quiz will help reinforce your understanding of electricity fundamentals.