Electric Current and Simple Circuits Test

Which is a measure of the amount of energy used to move a coulomb of electrons.

• Electric Circuit
• Voltage
• Electric resistance

Which is a complete path through which a current travels?

• Electric Circuit
• Voltage
• Electric Resistance

Which is a measure of how difficult it is for an electric current to flow through material?

• Electric Circuit
• Voltage
• Electric Resistance

The ohm is a unit used to measure ____________.

• Current
• Resistance
• number of electrons

Which material has a low electric resistance?

• Glass
• Plastic
• Copper

Which action would increase the resistance of a copper wire?

• Making it shorter
• Making it thicker
• Making it thinner

Which equation correctly states Ohm's law?

• v=cr
• v=c+r
• v=c/r

If the current and resistance in a circuit are known, the voltage can be determined by_____________________.

• adding current and resistance.
• multiplying current and resistance.
• subtracting current from resistance.

The unit used to measure electric resistance is the_______.

• Volt
• Ohm
• Ampere

Which statement describes the relationship between electric resistance and the flow of electric current in materials?

• Good insulators have no resistance.
• Good insulators have low resistance.
• Good conductors have low resistance.