Electrostatics Challenge

What is the fundamental unit of charge?

• Magnetic charge

• Elementary charge

• Atomic charge

• Proton charge

What is the SI unit of electric potential?

• ampere

• ohm

• joule

• volt (V)

State Coulomb's Law.

• The force between charged objects is directly proportional to the square of their charges

• Coulomb's Law only applies to neutral objects

• The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between their centers.

• The force between charged objects is inversely proportional to the distance between their centers

Define electric field intensity.

• Electric field intensity is unrelated to charge

• Electric field intensity is measured in volts

• Electric field intensity is a scalar quantity

• Electric field intensity is a vector quantity that describes the strength and direction of the electric field at a particular point in space.

Explain the concept of electric flux.

• Electric flux = E * A * cos(theta), where E is the electric field, A is the area vector, and theta is the angle between them.

• Electric flux = E * A * sin(theta)

• Electric flux = E / A * cos(theta)

• Electric flux = E + A + cos(theta)

What is the formula for capacitance of a parallel plate capacitor?

• C = Q/V

• C = kA/d

• C = εA/d

• C = R^2/L

Describe the process of charging by conduction.

• Charging by conduction is the process of transferring charge wirelessly.

• Charging by conduction is the process of transferring charge between objects through direct contact.

• Charging by conduction involves the use of magnets to transfer charge.

• Charging by conduction is the process of transferring charge through electromagnetic waves.

What is the principle of a Van de Graaff generator?

• Chemical reaction acceleration and catalysis

• Thermal energy conversion and conduction

• Electrostatic charge accumulation and repulsion

• Magnetic field generation and attraction

Explain the concept of dielectric breakdown.

• Dielectric breakdown is the sudden transition of an insulating material to a conductive state due to a high electric field.

• Dielectric breakdown is a slow and gradual process.

• Dielectric breakdown is caused by mechanical stress on the material.

• Dielectric breakdown occurs when the temperature of the material decreases.

How does lightning occur in terms of electrostatics?

• Lightning is a result of the Earth's rotation creating friction in the atmosphere

• Lightning occurs due to the build-up of electrostatic charge in clouds, leading to a discharge in the form of lightning.

• Lightning happens when the Sun's rays interact with the Earth's magnetic field

• Lightning occurs when clouds collide with each other, causing a spark