Units
Concepts
Ohms law
Mix
Super easy ones
100
How do we measure resistance?
Ohms
100
What is electricity?
Electricity is defined as the flow of electric charge.
100

Can you tell us Ohm’s equation?

V=I*R

100
When resistance is increased in a circuit, for example by adding more electrical components, the current XXXXXXXX as a result.
Decreases
100

What is the difference between DC and AC current?

DC is direct current goes in one direction.

AC is alternating current- it goes back and fourth

200
How do we measure current?
Amps
200
Elements with high conductivity, which have very mobile electrons are called...?
Conductors
200

What equation do you use to find resistance?

Resistance= Voltage/ Current (I)

200
The resistance of a long wire is XXXXXX than the resistance of a short wire
Greater
200

How many volts are delivered to your home in North America?

120V


300
How do we measure voltage?
Volts
300

If you plug an electric toaster rated at 110V into a 220- V outlet, current in the toaster will be 

twice what it should be

300

The current through a 5 ohm resistor connected to a 150 V power supply is 

30 Amps

300
The equation to find power

Power= Current (I) X Voltage (V)

300

What is the frequency of AC in North America?

60 hertz or 60 cycles per second

400

How do you measure potential difference?

voltage (volts)

400
Can you give 3 examples of conductors?
Copper, gold, silver, steel...
400
What is the potencial difference measured on the ends of a resistor of 10 Ohms in a circuit where a current flows at 4A?
40 V
400

In order of there to be a flow of charge from one place to another, there must be a 

-potential difference between two places

-conductor, such as a wire, connecting the two places

400

What flows through a circuit?

Current flows through a circuit. 

Current is the flow of electrons

500

How is Power measured?

Watts

500

Give and example of something that uses DC current and an example of something that uses AC current

DC - battery or anything with a rechargeable battery

AC- kitchen appliances, TV anything that has to be plugged in etc

500

When a 10 V battery is connected to a resistor, 2 A current flows in the resistor. What is the resistor's value?

5 ohms

500

How much power is used by a 6 V flashlight battery that draws 1.5 A of current?

9 Watts of Power

500

Materials through which charges do not move easily

Insulators

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