Electricity Post Test

An alternating current:

• Flows in 1 direction only
• turns on and off repeatedly
• flows in one direction only
• reverses direction repeatedly

The type of current produced by a battery is:

• induced current
• alternating current
• magnetic current
• direct current

What causes current to flow?

• potential difference
• energy
• electricity
• magnetism

An example of a voltage source is a(n)

• magnet
• electrical wire
• battery
• a resisitor

According to Ohm's law, Resistance is equal to to voltage divided by:

• potential difference
• conduction
• time
• current

In a series circuit  with 4 bulbs:

• a switch is never used
• all of the bulbs become dimmer if another bulb is added
• There are many paths for electricity to take
• the remaining 3 bulbs stay lit if one burns out

A device that uses electrical energy as it interferes with the flow of charge is a:

• resistor
• conductor
• insulator
• superconductor

What is a circuit?

• A pathway that electricity flows in. It has a load, wire, and a taco
• A pathway that protons flow in. It has a load, wire, and a power source.
• A pathway that electricity flows in. It has a load, wire, and a power source.
• A pathway that electricity flows in. It has a load and wire.

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

Which best describes a parallel circuit?

• Electricity flows along one pathway.
• The flow of electricity comes from more than one source.
• Electricity flows along more than one pathway.
• The flow of electricity comes from more than 1 load.