Electricity

Which statement is true?

• Opposite charges (+/-) attract, Same charges (+/+ or -/-) repel

• Same charges (+/+ or -/-) attract, Opposite charges (+/-) repel

Check all the correct answers (3) to this question: How can electric charges be transferred ?

• Friction

• Osmosis

• Conduction

• Induction

What do we call a material that allows electric charge to flow easily, like most metals?

• Insulator

• Conductor

What do we call a material that does not allow electric charge to flow easily, like plastic, rubber, or wood?

• Insulator

• Conductor

What type of circuits are most commonly used in wiring your house?

• Series circuits

• Parallel circuits

What type of current runs in your house?

• Direct current (DC)

• Alternating current (AC)

What type of current does a battery produce?

• Direct Current (DC)

• Alternating current (AC)

What are the units used in Ohm's Law, using the equation Voltage (V) = Current (I) x Resistance (R)?

• Amps = Volts x Ohms

• Volts = Amps x Ohms

What is the voltage of a circuit that uses a current (I) of 20 amps and has a resistance (R) of 6 ohms if the equation for Ohm's Law is V = I x R?

• 120 volts

• 3.33 volts

What generates electrical energy by spinning a coil of wires through a magnetic field?

• A battery

• A generator