Long Q/A Electrostatics - Students Free Notes

Describe the construction and working of a parallel plate capacitor.

Construction of a Parallel Plate Capacitor: A parallel plate capacitor consists of two flat, conducting plates that are placed parallel to each other and separated by a small distance. Here’s the construction in more detail: Plates: The two plates are made of conductive materials such as metal, and they are usually identical in shape and … Read more

What is electrostatic induction? Explain with an example.

Electrostatic induction is the process of charging a conductor without direct contact. Example: If a positively charged rod is brought near a neutral metal sphere, negative charges in the sphere move toward the rod, and positive charges move away. If the sphere is then grounded, positive charges escape, leaving the sphere negatively charged. When the … Read more

How does increasing the distance between the plates of a capacitor affect its capacitance?

The capacitance of a parallel plate capacitor is given by the formula: C=ε0A/d​ Where: C is the capacitance. ε0 is the permittivity of free space (a constant). A is the area of the plates. d is the distance between the plates. From this formula, you can see that the capacitance is inversely proportional to the distance between the plates … Read more

What happens to the force between two charges if the distance between them is tripled?

The force between two charges is governed by Coulomb’s law, which states that the force (F) between two 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.q1q2r/2​​ Where: k is Coulomb’s constant. r is the distance between … Read more