Chapter 7-Electricity

A complete, unbroken path through which electric charges can flow is a(n)?

• Electric Circuit

• Electrical resistance

• Magnetic field line

• Magnetic pole

Materials through which charge can flow easily are called?

• Magnets

• Conductors

• Insulators

• Resistors

An example of an insulator is?

• Copper

• Iron

• Silver

• Rubber

Power is calculated by multiplying voltage by ___

• Energy

• Voltage

• Current

• Resistance

The ampere is a unit of?

• Magnetism

• Electric charge

• Temperature

• Electric current

Like electric charges________ each other.

• Repel

• Attract

• Charge

• Unite

The strength of the electric field of a charged particle becomes greater as the distance from the particle_______

• Decreases

• Increases

• Potential

• Conduction

What is a disadvantage of using fuses?

• When a fuse burns out, it cannot be used again

• A fuse shuts off when the current gets too high

• A fuse contains a thin strip of metal that can melt

• A fuse prevents circuits from overheating

What are the basic features of an electric circuit?

• Conducting wires, an energy source, and a device that converts electrical energy into a different form

• A circuit board, batteries, and a plug in that connects the circuit to the power plant

• A light bulb, a generator, the sun and a balloon

• A lightening bolt, generator, the sun and a balloon