Basic Electrical Concepts Assessment

What is voltage?

• The rate of flow of electric charge

• The opposition to current flow

• The potential difference between two points in a circuit

• The power consumed by a circuit

The SI unit of current is:

• Volt

• Ampere

• Watt

• Joule

Which equation correctly represents Ohm's Law?

Power in an electrical circuit is measured in:

• Amperes

• Volts

• Ohms

• Watts

The formula for electrical power is:

• All of the above

Energy in an electrical circuit is measured in:

• Watts

• Joules

• Volts

• Amperes

A voltage of 12V across a 6ohm resistor will produce a current of:

• 72 A

• 0.5 A

• 2 A

• 18 A

What happens to current when voltage increases (assuming resistance remains constant)?

• Current remains the same

• Current increases

• Current decreases

• Current becomes zero

Electric potential energy is:

• The ability to do work by moving electric charges

• The rate of flow of charge

• The opposition to current flow

• The power dissipated in a circuit

The power dissipated in a 4ohm resistor carrying 2A of current is:

• 8 W

• 16 W

• 2 W

• 4 W