The positively charged particles that are found in the nucleus of an atom and do not move.
What are protons.
100
-1.6 x 10^-19 Coulombs.
What is the charge of an electron.
100
The flow of charges.
What is current.
100
The meaning of I in the equation I= V/R.
What is current.
100
Watts.
What is the unit for power.
200
The negatively charged particles that surround the nucleus of atom (like a cloud) and can move from atom to atom.
What are electrons.
200
If q1 and q2 are the same object with the same charge what will the resulting force be between them?
a repulsive force.
200
The potential difference in charges
What is voltage.
200
This device uses chemical energy to push current in a circuit.
What is a battery.
200
True/False- For a force to be described as work it must be parallel to the direction of motion.
True
300
How is an object charged by conduction?
One object is touched by another and is made the same charge as the original object.
300
What happens to the electric force when the charge is doubled on one object?
The electric force doubles.
300
A series circuit has 3 resistors: 2, 3, & 5 ohms. The voltage of the circuit is 10 V. What is the current through the 2 ohm resistor?
1 A
300
A circuit has a constant voltage and the resistance is increased, what happens to the current?
Current decreases.
300
A 50 kg man stands on top of a 10 m ladder. What is his potential energy?
4900 J
400
Draw the distribution of charges when a negative balloon is brought near a neutral wooden desk. What do you call this type of distribution?
polarization
400
What happens to the electric force when the distance between the two charged objects triples?
The electric force will decrease by a factor of 9. ( x 1/9)
400
A parallel circuit has 3 resistors: 2, 3, & 6 ohms. What is the total resistance?
1 ohm
400
A series circuit has a current of 4 amps and a resistance of 3 ohms. What is the voltage?
12 volts
400
What is the kinetic energy of a 100 kg car moving at 50m/s?
125,000 J
500
Draw and Predict the outcome of charge distribution: A negatively charged rod is brought close (not touching) to a metal conducting sphere that is grounded. What type of charging is this?
Charging by induction
500
Determine the electric force between two charged objects separated by a distance of 0.4 m. The charge of each object is 3 x 10^-6 C.
0.5 N
500
If a 120 V light bulb uses 40 W of power, what is the current?
0.33 A
500
A computer runs on a 24 volt battery. If the resistance of the circuit is 16 ohms, how much current does it use?
1.5 Amps
500
The total mechanical energy of a car on a roller coaster is 1250 J. If a 5 kg car is 5m off the ground, what is it's velocity?