Practice Voltage in Physics
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
The difference in electric potential energy per unit charge between two points. Measured in volts (V).
Voltage is like water pressure — it's the 'push' that drives current through a circuit.
Example 1
easyA battery does 24 \text{ J} of work to move 6 \text{ C} of charge. What is the voltage of the battery?
Example 2
mediumA 12 \text{ V} battery drives a current of 2 \text{ A} for 30 \text{ s}. How much energy does it supply?
Example 3
easyHow much work does a 9 \text{ V} battery do to push 4 \text{ C} of charge through a circuit?
Example 4
mediumA 9 \text{ V} battery transfers 450 \text{ J} of energy to a circuit. How much charge has passed through the battery?