Electricity Flashcards

(37 cards)

1
Q

Name the 8 types of energy

A

Light, heat, kinetic, sound, chemical, nuclear, electrical, potential

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2
Q

Can energy be destroyed or created

A

No, it can only turn into different types of energy

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3
Q

What is an example of energy changes

A

Kettle: electrical→heat

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4
Q

What type of charge does an electron have

A

Negative

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5
Q

What type of charge does a neutron have

A

Neutral

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6
Q

What type of charge does a proton have

A

Positive

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7
Q

What happens when two objects of the same charge interact

A

They repel against each other

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8
Q

What happens when two objects of the opposite charge interact

A

They attracts as opposites attract

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9
Q

What are examples of static electricity happening

A

Balloon rubbing on someone’s head
Feet rubbing against s trampoline
Trolley wheels rubbing off the floor

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10
Q

What is electrical current

A

The flow of electrons

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11
Q

What type of particles travel round a material for an electrical current to be produced

A

Electrons

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12
Q

What side of a battery does the electrical current move away from

A

The negative side

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13
Q

Why does the electrical current move away from the negative side of a battery

A

Because a negative and a negative don’t go together

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14
Q

What device is used to measure current

A

Ammeter

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15
Q

What is the unit of measurement for electrical current

A

Ampere/Amp (A)

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16
Q

What is voltage

A

The energy per electron

17
Q

What device is used to measure voltage

18
Q

What is the unit of measurement for voltage

19
Q

What is a series circuit

A

A circuit whee thee is only one path for electrons to flow around

20
Q

What is a parallel circuit

A

A circuit where there is more than one path for electrons to flow around

21
Q

What happens to current in a series circuit

A

It is the same at all points

22
Q

What happens to current in a parallel circuit

A

The total current is the values in each point added together

23
Q

What happens to voltage in a series circuit

A

The voltage across each component adds up to the supply voltage

24
Q

What happens to voltage in a parallel circuit

A

The voltage is the same at all points

25
What is resistance in a circuit
a measure of the opposition to current flow in an electrical circuit
26
What does resistance do to the current in a circuit
As the resistance increases, the current decreases
27
What is the word equation for Current
I = V over R
28
What is the word equation for Resistance
R = v over i
29
What is the word equation for voltage
V = IR
30
What device is used to measure resistance
Ohmmeter
31
What is the unit of measurement for resistance?
Ohms (omega sign)
32
What is an electrical conductor?
Something that lets electricity pass through it
33
What is an example of electrical conductors?
Any metal + graphite
34
What does an insulator do?
Does not let electricity pass through
35
What are some examples of an insulator?
Wood, rubber, glass, paper, plastic
36
What two things strengthen an electromagnet?
Increasing the number of coils Increasing the voltage passing through
37
What does an electromagnet do?
Moves things such at doorknobs, automatic doors and computer hard drives