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Edexcel GCSE Physics 2022 > Topic 11 Static electricity > Flashcards

Topic 11 Static electricity Flashcards

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1
Q

1 Which particles in an atom have a positive charge?

A

protons

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2
Q

2 Which particles in an atom have a negative charge?

A

electrons

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3
Q

3 What is the overall charge on an atom?

A

no charge

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4
Q

4 A sodium atom loses one electron to form a sodium ion. What is the charge on a sodium ion?

A

positive, +1

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5
Q

5 A chlorine atom gains an electron to form a chloride ion. What is the charge on a chloride ion?

A

negative -1

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6
Q

6 What particles flow to form an electrical current?

A

electrons

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7
Q

7 What name is given to materials that cannot allow electrons to flow through them?

A

insulators

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8
Q

8 Two acetate rods have the same charge and are hanging on threads. One is brought near the other. What happens to the rods: attraction, repulsion or nothing?

A

repulsion

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9
Q

9 An acetate rod is rubbed with a duster, which leaves the rod with a positive charge. What particles have been transferred?

A

electrons from the rod to the cloth

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10
Q

10 What force causes the transfer of electrons when a duster is used to rub an acetate rod?

A

friction

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11
Q

11 What type of materials can collect an electric charge: conductors or insulators?

A

insulators

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12
Q

12 What happens when two positively charged rods are brought near to one another?

A

repulsion

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13
Q

13 Which particles move when an object gains a charge?

A

electrons

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14
Q

14 What force causes the movement of these particles when an object gains a charge?

A

friction

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15
Q

15 A polythene rod is rubbed with a duster. The duster becomes positively charged. What is the charge on the rod now?

A

negative

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16
Q

16 Two acetate rods are both rubbed with the same cotton duster. What will happen if the two rods are brought near each other?

A

repulsion

17
Q

17 A negatively charged balloon is brought near a wall. Which charged particles at the surface of the wall do not move?

A

protons

18
Q

18 A charged balloon will stick to a wall because it causes a charge to form on the surface of the wall. What is this charge called?

A

induced charge

19
Q

19 If you become charged you feel a shock when you touch a metal object. What causes this shock?

A

flowing electrons

20
Q

20 A storm cloud has a positive charge. What happens to electrons when the cloud comes into contact with a lightning conductor?

A

electrons move from the conductor into the cloud

21
Q

21 Which charged particles move when something gains a charge?

A

electrons

22
Q

22 If you walk across a nylon carpet you may pick up a charge. Why does this charge not leave you?

A

nylon is an insulator/insulating material

23
Q

23 If you have a negative charge, why might you feel a shock when touching a metal door handle?

A

electrons move from you to the metal

24
Q

24 What is the process of removing charge from an object called?

A

earthing

25
Q

25 When a charged objected has been earthed and no longer has a charge, how do we describe it?

A

discharged

26
Q

26 Aeroplanes gain a charge while flying. What can happen between an aeroplane and a metal object near it, as it lands?

A

spark from discharge

27
Q

27 A bonding line is connected to an aeroplane to earth it before refuelling it to stop any sparks from discharge. What might happen if a spark occurs?

A

it will ignite the fuel

28
Q

28 In an electrostatic sprayer, the droplets of spray spread out wide. Why does this happen?

A

all the droplets are given the same charge and repel one another

29
Q

29 Static electricity is a non-contact force that can produce a field around it, called an electric field or electrostatic field. Give the name of a field produced by another non-contact force.

A

magnetic field, gravitational field

30
Q

30 To show the strength of a field, we draw field lines. What do field lines that are closer together represent?

A

a stronger field strength

Edexcel GCSE Physics 2022 (10 decks)

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