Electricity and Circuits

What are the two types of circuits?

• Series circuit and parallel circuit

• Up circuit and down circuit

• Square circuit and triangle circuit

• Red circuit and blue circuit

Define electric current.

• Transfer of heat through a material

• Movement of water through a pipe

• Passage of sound waves through air

• Flow of electric charge through a conductor

In a series circuit, what happens to the current as more resistors are added?

• The current decreases

• The current increases

• The current becomes alternating

• The current stays the same

What do the following electrical symbols represent:

• a) Ammeter b) Voltmeter c) Galvanometer

• a)Bulb b) Resistor c) Cell

• a) Wire b) Motor c) Transformer

• a) Light switch b) Fuse c) Capacitor

Using Ohm's law, provide the formula for calculating resistance, where R is the resistance, V is the voltage, and I is the current.

• R = V - I

• R = V/I.

• R = V x I

• R = V + I

What is the unit of measurement for resistance?

• Volt (V)

• Ampere (A)

• Joule (J)

• Ohm (Ω)

What is the SI unit of measurement for electric current?

• Ohm (Ω)

• Ampere (A)

• Watt (W)

• Volt (V)

Define voltage in an electric circuit.

• Amount of current flowing in the circuit

• Force that drives the current through the circuit

• Resistance to the flow of current

• Rate of doing work in the circuit

Which of the following is NOT a conductor?

• Water
• Aluminum
• Wood
• Penny

In Direct Current (DC) ...

• Electrons flow in the SAME direction

• Electrons flow in DIFFERENT directions

• Electrons flow in OPPOSITE directions

• Electrons do not flow in Direct Current (DC)