Level 2 electrical science

What is the SI unit of electric charge?

• Joule
• Volt
• Ampere
• Coulomb

Which of the following materials is a good conductor of electricity?

• Rubber
• Copper
• Glass
• Wood

What is the SI unit of electric current?

• Farad
• Ohm
• Ampere
• Coulomb

What does Ohm's Law describe the relationship between?

• Voltage, current, and resistance
• Power and energy
• Frequency and wavelength
• Speed and velocity

What is the function of a transformer in an electrical circuit?

• Change AC to DC
• Increase voltage
• Decrease resistance
• Store energy

Which component is used to store electrical charge in a circuit?

• Resistor
• Capacitor
• Inductor
• Transistor

What is the purpose of a fuse in an electrical circuit?

• Control voltage
• Protect against overload
• Increase current
• Decrease resistance

What is the SI unit of electrical power?

• Watt
• Joule
• Volts
• Ampere

What does an ammeter measure in an electrical circuit?

• Voltage
• Current
• Resistance
• Power

Which law states that the total current entering a junction must be equal to the total current leaving the junction in a circuit?

• Kirchhoff's Voltage Law
• Newton's Law
• Ohm's Law
• Kirchhoff's Current Law