If the distance between an electron and a proton is halved, the magnitude of the electrostatic force between these charged particles will be
What is doubled
100
The unit with electrical charge.
What is coulomb
100
The electrons within magnets that are moving
What is Magnetic force
200
The current through a 10.-ohm resistor is 1.2 amperes. what is the potential difference across the resistor?
What is 12V
200
When the lines are____ the field strength is _____
What is closer;stronger
200
Gravitational forces differ from electrostatic forces in that gravitational forces are _____
What is attractive
200
Electric field lines point away from _____ charges, and towards _____ charges.
What is positive; negative
200
The rate at which electrical energy is transferred in a circuit
What is electrical power
300
A circuit has two 4.0-ohm resistors that are connected to a 16-volt battery. The rate at which electrical energy is expended in this circuit is
What is 32W
300
If a magnet is broken, each piece will have
What is a north and south pole
300
As field strength decreases, distance _____
What is increases
300
certain materials that allow electric charges to mve freely are called___, while materials with electric charges cannot move freely are known as ____
What is conductors;insulators
300
Magnets where electrons are disorganized is called
What is unmagnetized
400
If 60. joules of work is required to move 5.0 coulombs between two points in an electric field, what is the potential difference between these points.
What is 12V
400
Magnetic field lines go out of ___ and into ___
What is north ;south
400
A proton is moved through a potential difference of 10 volts in an electric field. How much work, in electron-volts, was required to move this proton.
What is 10 eV
400
If a conductor carrying a net charge of 8 elementary charges is brought into contact with an identical conductor with no net charge, what will be the charge on each conductor after they are seperated
What is 4 elementary charges
400
The value of charge for an electron or proton
What is 1 elementary charge
500
What is the total current in a circuit consisting of six operating 100-watt lamps connected in parallel to a 120-volt source
What is 5A
500
A magnet can be weakened by
What is hitting or heating it
500
Three protons are separated from a single electron by a distance of 1x10^-6 m.Find the electrostatic force between them. Is this force attractive or repulsive?
What is -6.90x10^-16N, repulsive
500
An object possessing an excess of 6.0x10^-13 electrons has what net charge
What is 9.6x10^-13C
500
The total charge of the system that remains constant