Lesson T5.2.1
T5.2.1 Charge transfer by rubbing Quiz: KS3 Physics, Unit 5
20 questions
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Lesson T5.2.1, Charge transfer by rubbing: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 5: Electricity and magnetism, written with Revision Ninja.
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The 20 questions
-
When two objects are rubbed together and become charged, which particles move from one object to the other?
- Atomic nuclei
- Electrons
- Protons
- Neutrons
-
What is the charge on a proton?
- Negative
- Positive
- Neutral, with no charge
- It changes with temperature
-
What charge does an electron carry?
- Neutral, with no charge
- Negative
- Positive
- Both positive and negative
-
A neutral object contains which of these?
- A larger number of electrons than protons overall
- A larger number of protons than electrons overall
- No protons or electrons, so it has no charge at all
- Equal numbers of protons and electrons
-
An object becomes negatively charged when it:
- Loses protons
- Gains electrons
- Loses electrons
- Gains protons
-
An object becomes positively charged when it:
- Loses electrons
- Loses neutrons
- Gains electrons
- Gains protons
-
Which action produces static electricity on an object?
- Rubbing two insulating materials together
- Passing current through a coil of wire
- Shining light onto a metal plate
- Heating a metal wire until it glows
-
Two charged objects are brought close together. Which pair will attract each other?
- Two objects with no charge at all
- Two positive objects
- Two negative objects
- A positive object and a negative object
-
What do like charges do to each other?
- Have no effect
- Attract
- Cancel out completely
- Repel
-
A balloon rubbed on a woollen jumper sticks to a wall. What is the best explanation?
- The balloon is charged and induces opposite charges in the wall
- The balloon has become magnetised by rubbing
- The balloon has grown heavier than the wall it touches
- The wall has become hotter than the balloon
-
A glass rod becomes positively charged when rubbed with silk. What has happened to the glass rod?
- It has lost electrons to the silk
- It has gained protons from the silk
- It has gained electrons from the silk
- It has lost neutrons to the silk
-
Two polythene rods, each rubbed with cloth, push each other apart. What can you say about their charges?
- They are both electrically neutral
- One is charged and the other is neutral
- They carry opposite types of charge
- They carry the same type of charge
-
Hair stands up and spreads apart after a balloon is rubbed on it. Why?
- Each hair gains the same charge and the hairs repel
- Each hair becomes hot and expands
- Each hair becomes heavier and falls apart
- Each hair becomes magnetised and repels
-
Which statement about charge transfer during rubbing is correct?
- Charge is created from nothing each time objects are rubbed together
- Charge is moved from one object to the other, and the total stays the same
- Protons move freely from one object across to the other object
- Charge is destroyed as soon as the two objects are pulled apart again
-
Object A gains 1000 electrons and object B loses 1000 electrons when they are rubbed together. What is their total charge?
- Zero, because the charges cancel out
- The same charge as object A alone
- Twice the charge on object A
- The same charge as object B alone
-
Why does rubbing leave charge on an insulator but not on a metal held in the hand?
- Metals absorb all the charge into their nuclei, so none is left behind
- Metals contain no free electrons, so they cannot hold any charge at all
- Insulators are heavier, so the charge cannot be lost from them easily
- Electrons in an insulator cannot flow freely, so the charge stays put
-
A charged object touches an identical neutral metal sphere, and the sphere then repels it. What has happened?
- The object has become magnetised by the sphere it was touching earlier
- Charge has moved onto the sphere, so both now have the same type of charge
- The sphere has become much heavier, so it pushes the object away from it
- The sphere has lost all its protons to the object it was touching
-
Which particles does an atom's nucleus contain?
- Electrons and neutrons
- Electrons and protons
- Protons and neutrons
- Only electrons
-
A charged balloon left against a wall eventually falls off. What is the main reason?
- Charge keeps building up until the balloon is pushed off the wall
- The balloon becomes much heavier as it picks up charge from the wall
- The wall repels the balloon with a magnetic force that builds up slowly
- Charge slowly leaks away, so the attraction becomes weaker
-
Which object is most likely to keep static charge for a long time after rubbing?
- A plastic ruler
- An aluminium can
- A steel spoon
- A copper wire
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