The electric field due to a point charge is given by which formula? (2020)

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Question: The electric field due to a point charge is given by which formula? (2020)

Options:

Correct Answer: kQ/r^2

Exam Year: 2020

Solution:

The electric field (E) due to a point charge (Q) is given by E = kQ/r^2, where k is Coulomb\'s constant.

The electric field due to a point charge is given by which formula? (2020)

The electric field due to a point charge is given by which formula? (2020)

Step 1: Understand that a point charge is an object that has an electric charge concentrated at a single point.
Step 2: Know that the electric field (E) is a way to describe how a charge affects the space around it.
Step 3: Remember that the formula for the electric field due to a point charge is E = kQ/r^2.
Step 4: Identify the variables in the formula: E is the electric field, k is Coulomb's constant, Q is the charge, and r is the distance from the charge.
Step 5: Realize that as you move further away from the charge (increasing r), the electric field strength (E) decreases.

Electric Field – The electric field is a vector field around a charged object that exerts a force on other charged objects.
Point Charge – A point charge is an idealized model of a charged object that has negligible size compared to the distance from which the electric field is measured.
Coulomb's Law – Coulomb's Law describes the force between two point charges and is foundational for understanding electric fields.