Static Electricity
76 questions· page 1 of 8
Which material is an electrical conductor at room temperature?
Options
A aluminium
B glass
C plastic
D rubber
A student investigates electrostatic charge using a balloon and a cloth. The balloon and cloth are initially uncharged.
The student rubs the balloon with the cloth. The balloon gains a negative charge of magnitude .
The cloth becomes charged and a force acts between the balloon and the cloth.
Which row correctly describes the magnitude and sign of the charge on the cloth and the type of force between the balloon and the cloth?
Options
| magnitude of charge on cloth | sign of charge on cloth | type of force | |
|---|---|---|---|
| A | equal to | positive | attraction |
| B | equal to | negative | repulsion |
| C | greater than | positive | repulsion |
| D | greater than | negative | attraction |
Plastic and wool are insulating materials.
Samples of plastic and wool are rubbed together. This causes a transfer of electrons.
Which row shows the direction of electron transfer and the final charge on both materials?
Options
| plastic | wool | final charge on plastic | final charge on wool | |
|---|---|---|---|---|
| A | gains electrons | loses electrons | neutral | positive |
| B | gains electrons | loses electrons | negative | positive |
| C | loses electrons | gains electrons | negative | positive |
| D | loses electrons | gains electrons | positive | neutral |
A plastic strip is rubbed with a cloth and the plastic becomes negatively charged.
Which statement explains this?
Options
A Electrons are transferred from earth to the plastic.
B Electrons are transferred from the cloth to the plastic.
C Electrons move from one side of the plastic to the other side of the plastic.
D Protons are transferred from the plastic to the cloth.
Two parallel, conducting plates are charged. The charge on the upper plate is positive. The charge on the lower plate is equal in size but negative.
Which diagram shows the pattern and the direction of the electric field between the two plates?
Options
A plastic rod becomes charged when it is rubbed with a cloth.
Which statement gives the reason for the charge on the rod?
Options
A The plastic rod loses protons and becomes negatively charged.
B The plastic rod loses electrons and becomes negatively charged.
C The plastic rod gains protons and becomes positively charged.
D The plastic rod loses electrons and becomes positively charged.
In an electrostatics experiment, a plastic rod is rubbed with a cloth.
The cloth becomes negatively charged.
Which diagram shows the charge on the rod and describes the movement of charge?
Options
Object X is stationary and positively charged. It experiences a force due to the field produced by object Y.
The arrows show the direction of the field produced by Y.
Which statement about the direction of the force on X is correct?
Options
A It is towards the right because it is in an electric field.
B It is towards the left because it is in an electric field.
C It is towards the right because it is in a magnetic field.
D It is towards the left because it is in a magnetic field.
A shoe becomes positively charged by friction when it rubs against a carpet.
What happens as the shoe becomes charged?
Options
A Negative electrons are transferred to the carpet.
B Negative electrons are transferred to the shoe.
C Positive electrons are transferred to the carpet.
D Positive electrons are transferred to the shoe.
An aircraft flying through the air becomes electrically charged.
What causes this to happen?
Options
A background radiation in the aircraft
B friction of the aircraft with the air
C heating of the aircraft surface
D radio waves emitted by the aircraft