Electric Charge: Definition, Types & Units

Questions and Answers

1.6 × 10^5 C

1.6 × 10^-19 C (correct)

1.6 × 10^18 C

1.6 × 10^-5 C

Because charge is always attractive

Because charge is always positive

Because charge is quantized (correct)

Because mass is conserved

Mass is always positive, but charge can be negative

Charge is always conserved, but mass is not

Charge is quantized, but mass is not

All of the above (correct)

By losing electrons to another body Signup and view all the answers

Equal amounts of positive and negative charge are created Signup and view all the answers

They repel each other. Signup and view all the answers

Coulomb Signup and view all the answers

Charge cannot be created or destroyed. Signup and view all the answers

Its spatial size is negligible compared to other distances. Signup and view all the answers

It possesses electric charge. Signup and view all the answers

Study Notes

Electric charge is a property of matter that produces and experiences electrical and magnetic effects.

A point charge is a charge whose spatial size is negligible compared to other distances.
Charge is a scalar quantity, meaning it can be added or subtracted algebraically.
Charge is transferable and can be transferred from one body to another.
Charge is always associated with mass, but mass can exist without charge.
Charge is conserved, meaning it cannot be created or destroyed.
The numerical value of an elementary charge is independent of velocity.

Charge produces electric fields and magnetic fields.
A charged particle at rest produces only an electric field, while a moving charge produces both electric and magnetic fields.
An accelerated charge radiates energy in the form of electromagnetic waves.
Charge is quantized, meaning it can only take on discrete values.
The smallest unit of charge is the charge of an electron, which is -1.6 × 10^(-19) C.

Electric charge can be positive, negative, or zero, while mass is always positive.
The charge carried by a body does not depend on its velocity, while mass increases with velocity.
Charge is quantized, while the quantization of mass is yet to be established.
Electric charge is conserved, while mass is not conserved and can be converted into energy.
The force between charges can be attractive or repulsive, while the gravitational force between two masses is always attractive.

A body can be charged by friction, which involves the transfer of electrons from one body to another.
Friction can cause one body to become positively charged and the other negatively charged.
Charging by friction involves the conservation of charge, resulting in equal amounts of positive and negative charges.
Other methods of charging include electrostatic induction.