Methods of Electrostatic Charging and Coulomb’s Law Worksheet

Electrostatics is the branch of physics that deals with

• electric charges at rest

• electric charges in motion

• magnetic fields in space

• electrical energy conversion

Answer explanation

Electrostatics specifically studies electric charges at rest, focusing on their interactions and forces. This distinguishes it from other areas like electrodynamics, which deals with charges in motion.

Static electricity is produced when there is

• continuous current flow

• an imbalance of charges

• magnetic field interaction

• uniform charge distribution

Answer explanation

Static electricity occurs due to an imbalance of charges, where positive and negative charges are not equal. This imbalance leads to the accumulation of static charge, unlike continuous current flow or uniform charge distribution.

Which subatomic particle is primarily responsible for electrostatic charging?

• Proton

• Neutron

• Electron

• Nucleus

Answer explanation

Electrons are the subatomic particles that carry a negative charge and are primarily responsible for electrostatic charging. Protons have a positive charge, but they are not mobile like electrons, which can move between atoms.

According to Benjamin Franklin, electric charges are classified as

• strong and weak

• light and heavy

• positive and negative

• moving and stationary

Answer explanation

According to Benjamin Franklin, electric charges are classified as positive and negative. This classification is fundamental in understanding electric interactions and is the correct choice among the options provided.

Like charges interacting with each other will

• attract strongly

• repel each other

• remain stationary

• cancel completely

Answer explanation

Like charges, such as two positive or two negative charges, will repel each other due to the electrostatic force. This is a fundamental principle of electromagnetism, where like charges always push away from one another.

Unlike charges interacting with each other will

• repel equally

• attract each other

• remain unaffected

• neutralize instantly

Answer explanation

Unlike charges, such as positive and negative, will attract each other due to the fundamental principle of electromagnetism. This attraction occurs because opposite charges create a force that pulls them together.

A neutral object is attracted to a charged object mainly because of

• magnetic induction

• charge separation

• electron destruction

• proton movement

Answer explanation

A neutral object is attracted to a charged object due to charge separation. The charged object induces a separation of charges within the neutral object, creating a temporary dipole that results in attraction.

Which material allows charges to move freely throughout its structure?

• Insulator

• Semiconductor

• Conductor

• Dielectric

Answer explanation

A conductor allows charges to move freely throughout its structure due to the presence of free electrons. In contrast, insulators restrict charge movement, while semiconductors and dielectrics have limited conductivity.

Which material restricts the movement of electric charges?

• Conductor

• Insulator

• Ground wire

• Neutral object

Answer explanation

An insulator is a material that restricts the movement of electric charges, preventing the flow of electricity. In contrast, conductors allow charge movement, while ground wires and neutral objects serve different functions.

Charging by friction occurs when

• objects are placed nearby

• objects are rubbed together

• objects are electrically grounded

• objects are connected by wire

Answer explanation

Charging by friction occurs when objects are rubbed together, allowing electrons to transfer from one object to another, resulting in a charge imbalance. This is the correct process for generating static electricity.