WorksheetsElectricity Unit Test
Total questions: 35
Worksheet time: 2hrs 45mins
What charge does a proton have?
Negative
Neutral
Positive
Extra
If resistance increases, what happens to current?
Increases
Decreases
No Change
If we move away from a charged particle, how does the electric field strength change?
Increases
Decreases
No Change
The Inverse Square Law says that the intensity decreases at a rate proportional to ________ squared.
Current
Acceleration
Distance
Frequency
Electricity needs a _____________________ to move through
Source
Path
Circuitry
Flow
Positive and negative charges attract:
TRUE
FALSE
What is this symbol?
Battery
Lamp
Switch
Wire
10C of charge flows in a wire every 2 seconds. Calculate the current in the wire.
5 Ohms
5 Amps
0.2 Volts
0.2 Amps
A substance that allows electric current to flow through it easily:
insulator
conductor
resistor
electric circuit
The amount of electrical energy flowing in a circuit per second
voltage
resistance
current
electric circuit
a measure of how difficult it is for current to pass; measured in ohms (Ω)
voltage
resistance
current
electric circuit
An example of a good insulator is...
aluminium
glass
copper
steel
Why can we survive a lightning strike in the car?
Rubber tires keep electricity from flowing
Lightning can't drive
We can drive away from the lightning
Lightning travel through the metal car body only
In relation to water, what is voltage?
Water pressure
Hose size
Sand in the hose
Steam
In relation to water, what is current?
Water pressure
Size of hose and flow rate
Sand in hose
Steam
In relation to water, what is resistance?
Water pressure
Size of hose and flow rate
Sand in hose
Steam
A 9V battery can produce 2A of current, how much power can the battery generate?
4.5W
18W
10W
81W
If a 30ꭥ resistor is connected to a 15V battery, how much current is flowing in the circuit?
0.5A
1A
2A
5A
If a total of 5C of charge passes through an area of our circuit in 10sec, what is the current?
10A
5A
2A
0.5A
Which direction does the force field lines point from a source?
Inward
Outward
Parallel
Random
Neutral Oxygen (O) has an atomic number of 8. What is the charge of an Oxygen ion that has 9 electrons?
Negative
Neutral
Positive
Infinite
What happens to the Coulomb force as we increase the distance between 2 charged particles?
Increases
Decreases
Does not change
What happens to voltage as we increase resistance?
Increases
Decreases
Remains unchanged
What happens to current as we increase voltage?
Increases
Decreases
Remains unchanged
Which ancient civilization rubbed cloth on amber to create static electricity?
Romans
Egyptians
Greeks
Mesopotamia
Who discovered the relationship between resistance, voltage, and current?
Ohm
Joule
Coulomb
Watt
