111 Physics questions Protons are attracted to

QUESTION 1

1. Protons are attracted to ________________.
   

   		other protons
   		electrons
   		neutrons
   		all the particles

3 points

QUESTION 2

1. If an atom has 5 protons, 5 neutrons, and 3 electrons, what is the atom’s charge?
   

   		+2
   		-2
   		0
   		-3

3 points

QUESTION 3

1. What law does static electricity illustrate?
   

   		Ohm’s law
   		Law of Conservation of Motion
   		Law of Conservation of Energy
   		Law of Conservation of Charge

3 points

QUESTION 4

1. Which of the following describes the principle of conservation of charge?
   

   		a charge is created
   		a charge cannot be transferred
   		charge cannot be created or destroyed, just transferred
   		charge can be destroyed

3 points

QUESTION 5

1. Which of the following is a good insulator?
   

   		wire
   		doorknob
   		plastic
   		nickel

3 points

QUESTION 6

1. When the plastic coating around a cord is damaged, why does the cord become hazardous?
   

   		The damaged cord looks bad
   		The damaged coating exposes the wires and can electrocute someone
   		The damaged cord can break off and the device will not work
   		The damaged cord can cause it to bond to something else

3 points

QUESTION 7

1. One volt is equal to:
   

   		100 newtons
   		50 Joules
   		1 Joule/Coulomb
   		100 Coulombs

3 points

QUESTION 8

1. Which particle flows to produce electric current?
   

   		nuclei
   		protons
   		electrons
   		Ohms

3 points

QUESTION 9

1. What is the SI unit amperes used to measure?
   

   		Resistance
   		Ohms
   		Voltage
   		Electrical Current

3 points

QUESTION 10

1. Which of the following is a source of direct electric current?
   

   		transformer
   		coulomb
   		switch
   		battery

3 points

QUESTION 11

1. Which of the following restricts the movement of charges?
   

   		Electrical pressure
   		Electrical resistance
   		Voltage
   		Conductive ability

3 points

QUESTION 12

1. Which of the following wires will have the least resistance?
   

   		A long thin wire
   		A short thin wire
   		A short thick wire
   		A long thick wire

3 points

QUESTION 13

1. What is the standard unit of resistance?
   

   		Amperes
   		Volt
   		Watt
   		Ohm

3 points

QUESTION 14

1. Which of the following mathematically describes Ohm’s Law.
   

   		V = I x R
   		I = V/R
   		R = V/I
   		all of the above

3 points

QUESTION 15

1. Which of the following is a circuit that has only one loop?
   

   		Parallel circuit
   		Open circuit
   		Series circuit
   		Combination circuit

3 points

QUESTION 16

1. A flashlight is an example of an object that is wired in which of the following circuit types?
   

   		Open circuit
   		Series circuit
   		Combination circuit
   		Parallel circuit

3 points

QUESTION 17

1. Why would two poles of different magnets attract each other?
   

   		They are different poles
   		It is at the center of the magnet
   		There is no magnetic pole
   		They are the same poles

3 points

QUESTION 18

1. What produces a magnetic field?
   

   		electrical resistance
   		increase in Ohms
   		transfer of protons
   		movement of electrons

3 points

QUESTION 19

1. The area where the magnetic force is exerted is known as which of the following?
   

   		pole
   		domain
   		field
   		area

3 points

QUESTION 20

1. What is it called when groups of atoms align their magnetic poles?
   

   		Magnetic force
   		Magnetic poles
   		Magnetic field
   		Magnetic domains

3 points

QUESTION 21

1. How does an iron nail become a magnet when it is placed in a strong magnetic field?
   

   		The nail’s domains become aligned
   		The nail gains magnetic properties from the magnetic field
   		The nail takes the magnetic properties from the strong magnetic field
   		The strong magnetic field stops the atoms from moving

3 points

QUESTION 22

1. As electricity flows through a wire, what type of field is created around the wire?
   

   		An electric field
   		A magnetic field
   		There is no field created
   		The field type varies from magnetic to electric

3 points

QUESTION 23

1. When a current is running through a coil of wire with an iron core, what is created around the wire that is carrying the current?
   

   		An electric force
   		A magnetic field
   		An electric field
   		A magnetic pole

3 points

QUESTION 24

1. Which of the following occurs when a wire is looped into a coil?
   

   		The magnetic force is increased
   		The magnetic force is decreased
   		The magnetic field is decreased
   		The magnetic field is increased

3 points

QUESTION 25

1. In an electromagnet, a moving charge creates which of the following?
   

   		a magnetic field
   		a permanent magnet
   		a magnetic pole
   		nothing

3 points

QUESTION 26

1. A dc motor uses ____________ to move wires.
   

   		differences in electric resistance
   		static electricity
   		an electromagnetic field
   		flowing protons

3 points

QUESTION 27

1. What is magnetic declination?
   

   		attraction of magnets for iron materials
   		a tool used to navigate by Earth’s magnetic field
   		difference between magnetic north and geographic north
   		a compass that points north

3 points

QUESTION 28

1. Earth’s magnetic north pole and its geographical north pole are which of the following?
   

   		in the same location
   		close to each other but in different locations
   		very far apart
   		both located with compasses

3 points

QUESTION 29

1. How does a generator use electromagnetic induction?
   

   		To create a magnetic force
   		To create an electric force
   		To create a magnetic field
   		To create an electric current

3 points

QUESTION 30

1. Electromagnetic induction is affected by which of the following?
   

   		the speed the magnet moves at and the number of loops the wire has
   		the size of the magnet and the thickness of the wire
   		the types of poles the magnet has and the number of loops the wire has
   		the speed of the magnet and the thickness of the wire

3 points

QUESTION 31

1. What is a generator used to create?
   

   		A magnetic field
   		A magnetic force
   		An electric field
   		An electric current

3 points

QUESTION 32

1. Which of the following is a transformer used for?
   

   		Alternate a voltage
   		Produce a voltage
   		Increase or decrease a voltage
   		Eliminate a voltage

3 points

QUESTION 33

1. If a magnetic force in a motor is not strong enough to move, then the current applied to the motor could be increased in order to increase the magnetic force of the motor.
   

   		True
   		False

2 points

QUESTION 34

1. A generator converts mechanical energy to electrical energy; a motor converts electrical energy to mechanical energy.
   

   		True
   		False

2 points

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QUESTION 1

1. 
   Use the diagram to answer the following question. Which characteristic of a wave is shown at Point A?
   

   		wavelength
   		crest
   		trough
   		amplitude

3 points

QUESTION 2

1. What is the wavelength of a wave?
   

   		the distance between crests
   		the height of the wave
   		the square of the amplitude
   		the amount of energy carried by the wave

3 points

QUESTION 3

1. 
   Use the diagram to answer the following question. Suppose the arrow at Point A spans 1 meter and the arrow at Point E spans 0.5 meters. What is the wavelength of the wave shown in the diagram?
   

   		0.5 metes
   		1 meter
   		1.5 meters
   		2 meters

3 points

QUESTION 4

1. The amount of energy carried by a wave is proportional to the square of the wave’s
   

   		frequency
   		amplitude
   		wavelength
   		period

3 points

QUESTION 5

1. What is the standard unit of frequency?
   

   		amplitude
   		period
   		hertz
   		meters per second

3 points

QUESTION 6

1. What is the speed of a wave that has a frequency of 45 Hz and a wavelength of 0.1 meters?
   

   		0.45 m/s
   		4.5 m/s
   		45 m/s
   		450 m/s

3 points

QUESTION 7

1. In transverse waves, the medium moves perpendicular to the direction of energy transport.
   

   		True
   		False

2 points

QUESTION 8

1. Surface waves move only in a back and forth motion.
   

   		True
   		False

2 points

QUESTION 9

1. What type of wave is associated with earthquakes?
   

   		electromagnetic waves
   		radio waves
   		seismic waves
   		magnetic field waves

3 points

QUESTION 10

1. What happens during destructive interference?
   

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