Past Mechanics II Test

1.)"Ion" is a name for what?

A charged atom
An electron
A proton

2.)If two charges are both doubled and the distance between them is also doubled, by how much does the electric force beween them change?

Increases by a factor of 2
Decreases by a factor of 2
Stays the same

3.)How much more electric potential does an object with a charge of 3 C have than an object in the same position with a charge of 1 C?

The electric potentials are the same
3 times more electric potential
9 times more electric potential

4.)How much voltage is across a circuit with 3 ohms of resistance and 6 amps of current through it?

6 V
18 V
24 V

5.)What does a diode do?

Prevent current in a circuit from reaching dangerous levels
Convert DC to AC
Convert AC to DC

6.)What is a circuit?

A moving charge
A path along which a current flows

7.)How is a magnetic field produced?

By a moving charged particle
By a static charged particle
By a freefalling charged particle

8.)Which has the stronger magnetic field:

A loop of wire
A straight wire

9.)Is earth's magnetic field stable?

Yes
No

10.)What law regulates the speed of light?

The law of conservation of momentum
The law of conservation of energy
The law of conservtion of charge

11.)Which part of a shadow is completely dark?

The front
The penumbra
The umbra

12.)What is the complimentary color of green?

Cyan
Magenta
Yellow

13.)By what process does light bend around corners?

Refraction
Reflection
Diffraction

14.)What does polariation do to light?

Remove a component
Brighten it
Darken it

15.)What kind of light can be used to produce a hologram?

White light
Light of one color
Coherent light