Electrostatics, Electric Fields, and Coulomb's Law

Front

What is the formula to calculate electric field strength (E)?

Back

E = F/q, where E is electric field strength, F is the force experienced by the charge, and q is the charge.

Front

What is Coulomb's Law?

Back

Coulomb's Law states that the force (F) between two point charges is directly proportional to the product of the magnitudes of the charges (q1 and q2) and inversely proportional to the square of the distance (r) between them: F = k * (|q1 * q2| / r^2), where k is Coulomb's constant.

Front

What is the unit of electric field strength?

Back

The unit of electric field strength is Newton per Coulomb (N/C).

Front

What is the charge of a proton?

Back

The charge of a proton is +1.6 x 10^-19 C.

Front

What is the process of charging an object by direct contact?

Back

Conduction.

Front

What is an insulator?

Back

An insulator is a material that does not allow electric charges to flow freely, such as rubber or glass.

Front

What is the principle of superposition in electric fields?

Back

The principle of superposition states that the total electric field created by multiple charges is the vector sum of the electric fields created by each charge individually.

Front

What is the difference between conductors and insulators?

Back

Conductors allow electric charges to flow freely (e.g., metals), while insulators restrict the flow of electric charges (e.g., rubber).

Front

What is electric potential (voltage)?

Back

Electric potential (voltage) is the amount of electric potential energy per unit charge at a point in an electric field, measured in volts (V).

Front

What is the relationship between electric field and electric potential?

Back

The electric field (E) is the negative gradient of the electric potential (V): E = -dV/dr.