Electrostatic Multiple Choice Questions

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10 Questions

If the distance between two charges is quadrupled, what happens to the force between them?

It decreases by a factor of 4

Which statement about the electric field lines due to charged particles is true?

They are always curved

What happens to the electric field intensity when the distance from a point charge is doubled?

It decreases by a factor of 2

Why do charged bodies exert force on one another?

Due to the presence of magnetic fields

Coulombs/volt

5 uF

30 uF

Why can alternating current flow in a capacitive circuit with AC voltage applied?

Varying voltage produces the charging and discharging currents

Insulator

What happens to the voltage across the plates of a parallel plate capacitor when they are separated apart?

Voltage across the plates decreases

Study Notes

Electric Forces and Fields

• If the distance between two charges is quadrupled, the force between them is reduced to one-sixteenth of its original value.

Electric Field Lines

• Electric field lines due to charged particles always start from positive charges and end at negative charges.

Electric Field Intensity

• If the distance from a point charge is doubled, the electric field intensity decreases to one-fourth of its original value.

Forces between Charged Bodies

• Charged bodies exert forces on one another because they interact with each other through the electric field.

Capacitance

• The correct unit of capacitance is the Farad (F).

Capacitors in Series

• When three 15 μF capacitors are connected in series, the net capacitance is 5 μF.

Capacitors in Parallel

• When three 10 μF capacitors are connected in parallel, the net capacitance is 30 μF.

Capacitive Circuits

• Alternating current can flow in a capacitive circuit with AC voltage applied because the capacitor continuously charges and discharges.

Dielectric Materials

• A common misconception about dielectric materials is that they are conductors, when in fact they are insulators that can be polarized by an electric field.

Parallel Plate Capacitors

• When the plates of a parallel plate capacitor are separated, the voltage across the plates increases.

Test your knowledge of electrostatics with these multiple choice questions and answers. Covering topics such as electric force, electric field intensity, and lines of force due to charged particles.

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