Test 1

Front 1

What are the units of potential difference?

Back 1

Volts

Front 2

New units of the electric fields were introduced in this chapter (8). They are:

Back 2

V/m

Front 3

The electric potential inside a capacitor

Back 3

increases linearly from the negative to the positive plate

Front 4

The positive charge is the end view of a positively charged glass rod. Is the work done on the charged particle by the rod's electric field positive, negative or zero?

Back 4

zero

Front 5

What is the SI unit of charge?

Back 5

Coulomb

Front 6

A charge alters the space around it. What is this alteration of space called?

Back 6

Electric Field

Front 7

If a negative charged rod is held near a neutral metal ball, the ball is attracted to the rod. This happens

Back 7

because the rod polarizes the metal

Front 8

The electric field of a charge is defined by the force on

Back 8

a test charge

Front 9

To determine if an object has "glass charge," you need to

Back 9

see if the object repels a charged glass rod

Front 10

An electroscope is positively charged by touching it with a positive glass rod. The electroscope leaves spread apart and the glass rod is removed. Than a negatively charged plastic rod is brought close to the top of the electroscope, but it doesn't touch. What happens to the leaves?

Back 10

The leaves get closer

Front 11

What device provides a practical way to produce a uniform electric field?

Back 11

A parallel plate capacitor

Front 12

For charged particles, what is the quantity q/m called?

Back 12

Charged-to-mass ratio

Front 13

Which of these charge distributions did not have its electric field determined in Chapter 6?

Back 13

They were all determined-

A line of charge

A parallel-plate capacitor

A ring of charge

A plane of charge

Front 14

The worked examples of charged-particle motion are relevant to

Back 14

a cathode ray tube

Front 15

What quantity is represented by the symbol (cursive) E?

Back 15

EMF

Front 16

What is the SI unit of capacitance?

Back 16

Faraday

Front 17

The electric field

Back 17

is always perpendicular to an equipotential surface

Front 18

Chapter 33 investigated

Back 18

parallel capacitors and series capacitors

Front 19

Light goes from medium A into medium B. If you measure that the angle the rays make with the normal in A is less than the angle they make with the normal in B, then you can conclude that the refractive index of A is less that the refractive of B. True or False.

Back 19

False

Front 20

If a lens produces a magnification of 1/4, the image is 4 times as large as the object but is inverted. True or False.

Back 20

False

Front 21

A blue filter absorbs the blue light as white light passes through it. True or False.

Back 21

False

Front 22

What limits the minimum size a rain drop can be to form a rainbow?

Back 22

When droplets get much smaller that the wavelength of visible light, geometrical optics doesn't hold and diffraction causes scatter in random directions washing out the colors.

Front 23

Many people believe they can read better in bright light than in dim light. Is this true?

Back 23

Yes, this is true because contraction of the pupil in bright light light reduces spherical aberration.

Front 24

A virtual image will not show up on a screen, and it cannot be photographed. True or False.

Back 24

False

Front 25

A single diverging lens always produces a virtual image of a object. True or False.

Back 25

True

Front 26

Suppose you place your face in front of a concave mirror.

Back 26

If you position yourself between the center of curvature and the focal point of the mirror, you will not be able to see your image.

Front 27

If two point charges exert a force of 1N on each other when they are 3 cm apart, they will exert a force of 1/25 N when they are 15 cm apart. True or False.

Back 27

True

Front 28

The equation for the electric field of an object with a net charge Q can be expressed using E=kQ/r^2

Back 28

if the object is either a point charge or the object is a uniformly charges sphere and r is greater that its radius.

Front 29

Ten point charges each produce an electric field at point P. How is the total electric field at P related to the ten individual electric fields produced by the point charges?

Back 29

It is a vector sum

Front 30

You want to put an electron somewhere between the plates of the parallel plate capacitor so that it will have the maximum electrical potential energy relative to one of the plates. The best place to put it is at the inner surface of the negative plate. True or False.

Back 30

True

Front 31

Consider two spheres, each containing the same net charge +Q. Sphere #1 has a larger radius than Sphere #2. The spheres are very far apart from each other. If the voltage is zero at infinity,

Back 31

the voltage on the surface of sphere #1 is lower than that of sphere #2