Electrostatic Forces in Materials
Physics ⇒ Electricity and Magnetism
Electrostatic Forces in Materials starts at 10 and continues till grade 12.
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See sample questions for grade 12
A charged rod attracts small pieces of paper even though the paper is neutral. Explain why this happens.
A dielectric material is placed between the plates of a capacitor connected to a battery. What happens to the charge stored on the plates?
A plastic rod is rubbed with wool and becomes negatively charged. What happens to the electrons in this process?
Describe the difference between a conductor and an insulator in terms of electron mobility.
Describe the effect of introducing a dielectric slab between the plates of a capacitor on the energy stored in the capacitor if the capacitor is isolated (not connected to a battery).
Explain why electrostatic shielding is effective in a hollow conductor.
Explain why metals are good conductors of electricity in terms of their atomic structure.
Explain why the electrostatic force is weaker in water than in air.
State Coulomb's law for the electrostatic force between two point charges.
