coulomb law and electric feild intensity-electromagnetic feilds

What is Coulomb's law?

An experimental law that describes the force between two point charges.

What do like charges do according to the properties of electric charges?

Like charges repel each other.

What happens to unlike charges according to the properties of electric charges?

Unlike charges attract each other.

What is the conservation principle related to charges?

The total charge in an isolated system is conserved.

What are electrical insulators?

Materials such as glass, rubber, and dry wood that do not allow charges to move freely.

What are electrical conductors?

Materials such as copper, aluminum, and silver that allow charge to distribute freely across their surface.

What does it mean when charges are 'quantized'?

Electric charge is quantized as electric charge (q) = Ne, where N is an integer.

What is electric field intensity?

It is the electric field around a charged object that can be detected by placing a test charge in the field.

What is the effect of bringing a charged rod close to a neutral sphere?

Electrons redistribute within the sphere, leading to a net charge distribution.

What is the mathematical representation for electric field due to a point charge?

E = k * |Q| / r², where k is Coulomb's constant, Q is the charge, and r is the distance.

What occurs to the force between two point charges as the distance between them increases?

The force decreases in accordance with Coulomb's law, which is inversely proportional to the square of the distance.

How does the number of electric field lines correlate with charge magnitude?

The number of field lines is proportional to the magnitude of the charge.

What is the significance of electric field lines in physical interpretation?

They represent the direction of the force that a positive test charge would experience in the field.

What is the concept of a continuous charge distribution?

Charge described as being distributed along a line, over a surface, or throughout a volume, rather than having discrete charges.

What are the three types of charge density?

Linear charge density (ρl), surface charge density (ρs), and volume charge density (ρv).

What does a uniform line charge density imply?

It means that charge is distributed evenly along a line.

In the context of electric fields, what happens if a charged object is at rest?

The electric field remains static and does not change with time.

What is electric potential difference?

The work done to move a unit charge from one point to another in an electric field.

What are the units of electric charge?

The unit of electric charge is the coulomb (C).

What is Ohm's Law?

It states that the current passing through a conductor between two points is directly proportional to the voltage across the two points.

How do you calculate electrical power?

Power (P) is calculated using the formula: P = VI, where V is voltage and I is current.

What is the role of a capacitor?

Capacitors store and release electrical energy in a circuit.

What does it mean for a circuit to be in series?

In a series circuit, components are connected end-to-end, and the same current flows through all components.

What is the difference between alternating current (AC) and direct current (DC)?

AC changes direction periodically, while DC flows in one direction.

What are magnetic field lines?

They represent the direction and strength of the magnetic field around a magnet.

What is the principle of electromagnetic induction?

It states that a changing magnetic field induces an electrical current in a conductor.

What is resistance in an electrical circuit?

Resistance is the opposition to the flow of electric current, measured in ohms (Ω).