Quiz on Potential Difference and Related Concepts

What is the formula for potential difference?

• V = W/Q

• V = Q/W

• V = W*Q

• V = Q*W

What is the unit of potential difference?

• Volts

• Joules

• Watts

• Coulombs

What does zero potential refer to in an electric field?

• A point with infinite charge

• The point of highest voltage

• The maximum potential energy

• A reference point with zero volts

What is electromotive force (emf)?

• The energy provided by a source per unit charge

• The energy lost in a circuit

• The resistance in a circuit

• The current flowing through a circuit

If 15 joules of energy is used to move 5 coulombs of charge, what is the potential at that point?

• 15 V

• 10 V

• 5 V

• 3 V

What is the analogy used for zero potential?

• The height of a building

• The depth of an ocean

• The peak of a mountain

• Sea level in geography

What does electric potential tell us?

• How much energy each coulomb of charge would have at a point

• The resistance at a point

• The current at a point

• The total energy in the circuit

What is the unit of charge used in the formula V = W/Q?

• Coulombs

• Volts

• Joules

• Watts

What is the potential difference if 50 joules of work is done to move 10 coulombs of charge?

• 5 V

• 10 V

• 50 V

• 0.5 V

What is the work done if a potential difference of 12 volts is applied across two points and 4 coulombs of charge is moved?

• 4 J

• 12 J

• 24 J

• 48 J