The Electricity and Magnetism Test consists of 16 questions. Correct answers will be provided after your answers have been submitted. If they are available, possible solutions can be accessed by clicking an additional link at the bottom of the answer, which will open a problem solution screen. If you bring up such a solution screen be sure to close it by clicking the button in the upper left corner or upper right corner.

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1		How does an electron acquire a negative charge?
			A)	From an imbalance of subatomic particles.
			B)	By induction or contact with charged objects.
			C)	From the friction of certain objects rubbing together.
			D)	Charge is a fundamental property of an electron.
2		Which of the following is most likely to acquire an electrostatic charge?
			A)	Objects that are electrical conductors.
			B)	Objects that are electrical nonconductors.
			C)	Conductors and nonconductors are equally likely to acquire electrostatic charges.
			D)	Objects that are grounded.
3		A quantity of electric charge is measured in a unit called a (an)
			A)	coulomb.
			B)	volt.
			C)	watt.
			D)	amp.
4		The unit that describes the potential difference that occurs when a certain amount of work is used to move a certain quantity of charge is called a (an)
			A)	ohm.
			B)	volt.
			C)	amp.
			D)	watt.
5		Which of the following units are measures of time rates?
			A)	Amp and volt.
			B)	Coulomb and joule.
			C)	Volt and watt.
			D)	Amp and watt.
6		An electric current is measured in units of
			A)	coulomb
			B)	volts.
			C)	amps.
			D)	watts.
7		In an electric current the electrons are moving
			A)	at a very slow rate.
			B)	at near the speed of light.
			C)	faster than the speed of light.
			D)	at a subspace speed known as "Warp 8."
8		If you multiply amps times volts the answer will be in units of
			A)	resistance.
			B)	work.
			C)	current.
			D)	power.
9		Which of the following is a measure of electrical work?
			A)	kW
			B)	C
			C)	kWh
			D)	C/s
10		If an electric charge is somehow suddenly neutralized, the electric field that surrounds it will
			A)	immediately cease to exist.
			B)	collapse inward at the speed of light.
			C)	continue to exist until neutralized.
			D)	move off into space until it finds another charge.
11		If you reverse the direction of an electric current in a wire the magnetic field around the wire will
			A)	be oriented as it was before.
			B)	become oriented with an opposite north direction.
			C)	flip to become aligned parallel to the length of the wire.
			D)	cease to exist.
12		A step-up transformer steps up the
			A)	power.
			B)	current.
			C)	voltage.
			D)	all of these.
13		What current would flow between two points in an electric circuit with a potential difference of 120 V and a resistance of 30 ohm?
			A)	3 A
			B)	4 A
			C)	40 A
			D)	80 A
14		A 1300 watt hair blow dryer is designed to operate on 120 volts. How much electrical current does the dryer require?
			A)	10.83 A
			B)	11 A
			C)	1180 A
			D)	156 A
15		A step-up transformer has 5 loops on its primary coil and 20 loops on its secondary coil. If the primary coil is supplied with an alternating current at 120 volts, what is the voltage in the secondary?
			A)	4 V
			B)	30 V
			C)	120 V
			D)	480 V
16		A small radio operates on 3.00 V and has a resistance of 15.0 ohm. At what rate does the radio use electric energy?
			A)	0.200 A
			B)	5.00 A
			C)	0.600 W
			D)	45.0 W