Final Exam Pt. 1

The conservation of charge states that electrons can be destroyed or created

What is the unit for electric potential?

A woman experiences an electric shock, the electrons making the shock come from

As the number of loops in a current-carrying wire is increased, the

Superconductors do not have an iron core

If you overload a parallel circuit it can cause a fire

The colored part of our eye is called

If a coil has twice as many loops the voltage induced is

Harmful rays that surround earth

A device that transforms electrical energy to mechanical energy is a

Earth's itself is a magnet

A step-up transformer in an electrical circuit can step up

A laboratory device that produces high voltage and static electricity

A total shadow is called

The lowest frequency of light is red and the highest is violet

The image in a pinhole camera is

A magnet works better in a warm temperature

Glass is transparent to

The sky is blue due to scattering of light

Red, green, and blue light overlap to form

What is not an example of an insulator

The mutual induction of electric and magnetic fields can produce

The clear pair of reading glasses will get hotter than sunglasses if left outside

The source of all magnetism is

A plane mirror creates a virtual image

______Charges attract one another, ______Charges repel.

Magnetic field strength about a magnet is strongest where magnetic field lines are

The strongest electrons are located in the innermost area.

Direct current flows at a steady rate

Magnetic compasses reportedly were first used for navigation by

Protons and Neutrons have a negative charge

When you brush your hair and scrape electrons from your hair, the charge of your hair becomes

Like kinds of magnetic poles repel while unlike kinds of magnetic poles

Pigeons navigate primarily by

Compared to the primary voltage, the secondary voltage can be

The two types of lenses are convex and concave

Circuit elements that regulate current inside electrical devices.

What were the stones found in Greece called that had magnetic values?

Gravitational forces are only attractive

A white sky is evident tha the atmosphere contains

When your eye is unequally curved

When white light shines through a prism, the first color to show is

As more lamps are put into a series circuit, the overall current will

The idea that light takes the quickest path is due to Fermat's principle

Electromagnetism unites

Bending of light when passing from one medium to another

A bar magnet has two sides, a positive and negative side

A device that transforms mechanical energy into electrical energy is a

Different colors of light correspond to different light

Voltage can be induced in a wire by

A material with zero resistance to the flow of charge

what element do magnetic domains occur in normally

The sky is usually the deepest blue before a storm

The metal detectors that people walk through at airports operate via

In the past when one car headlight went out so did the other, what circuit were they connected in?

Electrical energy can be stored in a common device called a

Earth's magnetic poles have reversed 20 million times

The source of all electromagnetic waves is

Charge is across the circuit, voltage flows through the circuit

Electrons move at the speed of light

When visible light is incident upon clear glass, atoms in the glass

An electric field surrounds every magnet

Materials become warmer when light is

When voltage is induced in a coil of wire, current is

Alternating current is usually produced by a

is an automatic switch that turns off when the current is excessive.

Electromagnetic induction is credited to

The rate at which energy is transferred is

Stretch a copper wire so it is thinner, the resistance

_____________ fills the space surrounding an electric charge

ultraviolet light produces sunburns

Which is a useful property of a prism

A mirage is a result of atmospheric

When white light passes through a prism, green light is bent more than

Which of the following is invisible to the human eye

Which of these do resistors not depend on?

The sensation of color is seen when light falls on the eye's

More voltage is induced when a magnet is thrust into a coil

If you break a bar magnet in half you'll

When running a comb through your hair, where do the electrons go?

Alternating currents produce alternating magnetic fields.