Static electricity
Electric current
Voltage
Energy
100
Draw a structure of atom
100
The conventional current in a wire is in the _______ the flow of electrons in the wire.
opposite direction to
100
What is the formula for Ohm's law
voltage = current * resistance
100
What is the formula for energy?
E=QV
200
An acetate rod is rubbed with a cloth duster, giving the acetate rod a net positive charge and the duster a net negative charge. Which object has gained electrons?
the duster
200
What is the formula connecting current and charge?
current = charge/time
200
How many volts are there in 20 kilovolts?
20 000 volts
200
What is the formula for power?
P=IV
P=I2R
300
Two positive charges will _____ each other. Two negative charges will _____ each other. One positive charge and one negative charge will _____ each other.
repel, repel, attract
300
A rechargeable battery is left to charge for a period of time. It is charged with a current of 10 mA. After it has finished, the battery has gained 180 C of charge. For how many hours was the battery left to charge?
5 hours
300
The diagram shows an electric circuit containing a cell and a bulb. Which component in the circuit provides an electric potential difference? 
the cell
300
An electric motor is connected to a 9 V battery. Over a period of time, the motor converts 450 J of electrical energy into kinetic energy, heat, and sound. How much charge passes through the motor over this period of time?
50 C
400
The diagram shows two pairs of negatively charged particles. The particles in the first pair (a) are closer together than the particles in the second pair (b). For which pair of particles will the repulsive force between them be greater? All four charges are equal. The two pairs of particles are in separate locations, far away from each other. 
(a)
400
Calculate the amount of electrons that passes through a lamp in 2 minutes if the current is 1.5A?
1 Coulomb is the quantity of charge carried by (approximately) 6×1018 electrons!
5.4*1020
400
The potential difference provided by the cell is equal to the ____ divided by the ____.
amount of work done (joules), amount of charge that has been separated (couomb)
400
A 4 A current passes through a 10 Ω resistor. How much is the power of the resistor?
160 W