Electric Current and Circuits Quiz

What did Italian scientist Alessandro Volta invent to create an electric potential difference between two pieces of different metals?

• Voltaic cell

• Solar panel

• Hydroelectric dam

• Wind turbine

What is the unit of electric current?

• Ohms per second

• Volts per minute

• Watts per hour

• Coulombs per second

What is the direction of electric current according to the convention used by Benjamin Franklin?

• From positive to negative terminal

• From negative to positive terminal

• From low voltage to high voltage

• From high resistance to low resistance

What is the unit of resistance?

• Watt

• Volt

• Ampere

• Ohm

What is the relationship between voltage, current, and resistance known as?

• Tesla's Principle

• Einstein's Theory

• Ohm's Law

• Newton's Law

What happens to the resistance of conductive materials when they are made extremely cold?

• It remains the same

• It decreases

• It increases

• It becomes infinite

What is the equation for calculating power used by a device in a circuit?

• P = V + I + R

• P = I / R

• P = V * I

• P = V / R

What is the function of a resistor in a circuit?

• To increase voltage

• To provide resistance

• To store energy

• To decrease current

What is the unit of power?

• Volt

• Watt

• Ohm

• Ampere

What is the relationship between power, current, and voltage known as?

• Ohm's Law

• Tesla's Principle

• Einstein's Theory

• Newton's Law