Charges
Conductors & Insulators
Circuit Diagrams
Current & Voltage
Resistance
Circuits
100
A charged particle will ___________ a neutral particle.
Attract
100
An example of a good conductor.
Aluminium, copper, gold, nickel, platinum, silver, tungsten.
100
What is this a diagram of?
Battery
100
What is the difference between a cell and a battery?
Cell: A single electrical unit.
Battery: A combination of two or more cells.
100
What is resistance?
A property that hinders motion of electric charge and slows current flow.
*Also, converts energy into light or heat.
100
If one load is turned off in a series circuit, what happens?
None of the loads will be able to run, all will be off.
200
The __________________(law) explains the behaviour between objects with and without charges.
The Law of Charges
200
A good example of an insulator.
Glass, cotton, paper, plastic, rubber, porcelain, etc.
200
What are the loads in this circuit diagram?
Light bulbs
200
The unit for measuring current is ______________.
Amps/Amperes.
200
Good conductors have _____________ resistance; poor conductors have _____________ resistance.
Low;high.
200
What type of circuits are found in homes.
Parallel.
300
Like charges will ____________ one another while unlike charges will ____________ one another.
Repel;attract
300
When you get a shock, it is a __________ of electric energy.
Discharge.
300
What does the zigzag diagram represent?
A variable resistor.
300
A device that you would use to measure current is called _____________.
An ammeter.
300
What is the equation derived from the principle of Ohm's Law?
R= V / I
300
How is 'length' related to resistance?
As the length increases, so does the resistance.
Directly related.
400
When you drag your feet across the carpet, are you gaining or losing electric charges?
Gaining
400
What are the two main components required for an electrochemical cell to work(produce electricity)?
2 different electrodes.
An electrolyte solution.
400
What symbol would you draw to show that you can open and close a circuit?
A switch.
400
Using the water model of electricity, water inside of a bottle would have what type of energy?
Potential energy.
400
How is a variable resistor different from a regular resistor?
A variable resistor changes its resistance in response to stimuli (ex, temperature, light, voltage etc.)
Ex. Dimmer switch, volume dial
400
Christmas lights would be a example of what type of circuit?
Series
500
What would happen to these two balloons?
They would repel.
They have like charges (both -3)
500
Name the components of the circuit, and identify the type of circuit.
Battery, 2 resistors, light bulb (load)
Parallel circuit.
500
What is the resistance of a light bulb if a 20V battery sends a current of 5A through it?
R= V/I
R=20V/5A
=4 ohms
500
Which circuit would have dimmer lights? (They both have the same power source).
A: A series circuit with 2 light bulbs.
B: A parallel circuit with 2 light bulbs.
A