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Flashcards in Current Electricty Deck (16)
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1
Q

Conductors

A

Are substances with allow current to flow through the them freely

2
Q

Insulators

A

Are substances which do not allow electricity to flow through them

3
Q

Electric Current

A

Is a flow of electric charge

4
Q

Closed circuit

A

A closed circuit is needed for the current to flow, if there is a break in the circuit the the current won’t flow.
-> energy can’t get through

5
Q

Energy provided

A

By a battery or power pack, it is needed to move the current around the circuit

6
Q

The battery pumps electrons forms it’s negative end around a circuit

A

from it’s negative end around a circuit

7
Q

The electrons are attracted

A

Back to the positive end of the battery

8
Q

Potential difference

A

The difference in electrical pressure between the positive and negative ends of a battery/power pack

9
Q

Whenever there is a potential difference

A

Electricity will flow

10
Q

The potential difference is known as ______

A

Voltage and is measured in volts

11
Q

Resistance

A

Is the opposition to the flow of electrons. The unit is Ohm, and it’s measured using an Ohmmeter

12
Q

Resistor

A

If placed in an electric circuit, it will slow down the flow of electrons

13
Q

Ohm’s Law

A

Ohm’s law states that voltage is directly proportional to current

14
Q

Heating effect

A

Boil water in a kettle, immersion heater, electrical cooker, fuse in plug

15
Q

Chemical effect

A

Electroplating cheap metal with more expensive metal e.g. silver, electrolysis (splitting) of water, mobile phone battery

16
Q

Magnetic effect

A

Electromagnet made with a wire wrapped around a nail, electric motor, speakers, circuit breaker in fuse board