Electric Current Quiz

What is an electric current?

• The flow of water in a pipe

• The flow of electric charges (electrons)

• The measure of electric resistance

• The amount of voltage in a circuit

What is the SI unit for electric current?

• Volt

• Ohm

• Ampere

• Watt

What happens in a simple electric circuit when the switch is open?

• Current flows continuously

• Current will not flow

• The battery charges

• The circuit becomes neutral

How do batteries create an electric field in a circuit?

• By connecting wires

• Through chemical reactions

• By using insulators

• By increasing voltage

What is electric resistance?

• The flow of electrons

• The measure of how difficult it is for electrons to flow

• The amount of voltage in a circuit

• The speed of electrons

What is the unit for electric resistance?

• Ampere

• Volt

• Ohm

• Watt

What happens to electrical energy when electrons collide with atoms?

• It is lost

• It is converted into other forms of energy

• It increases the electric field

• It decreases the current

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How does increasing the electric field affect the movement of electrons?

• It slows them down

• It has no effect

• It causes them to move faster

• It changes their direction

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What is voltage a measure of?

• The speed of electrons

• The amount of electrical energy transferred by an electric charge

• The resistance in a circuit

• The number of electrons in a circuit

In a series circuit, what happens if one device fails?

• Current continues to flow

• Only that device stops working

• Current will not flow at all

• The circuit becomes neutral