Practice Problems on Electrostatics
1. A point charge Q=+4μC is located at the centre of a spherical Gaussian surface of radius r=0.1m. Calculate the electric flux through the Gaussian surface.
2. Consider a uniform electric field E=2×103 N/C directed along the positive x-axis. Determine the total charge enclosed by a cylindrical Gaussian surface of radius r=0.05m and height h=0.2m centred at the origin.
3. Two point charges, q1=+4C and q2=-3C, are placed 5cm apart in air. Calculate the magnitude of the electric force between them.
4. The charges, q1=+5C, q2=-3C, q3=+7C are placed at the vertices of an equilateral triangle of side length 15 cm. Calculate the magnitude and direction of the net electric force on each.
5. An electric dipole consists of q=2C, separated by a distance of 10 cm. Calculate the electric dipole moment and the electric field at a point 20 cm away from the centre of the dipole along its axis.
Electrostatics
Electrostatics is the study of electric charges that are fixed. It includes an study of the forces that exist between charges as defined by Coulomb’s Law. The following concepts are involved in electrostatics: Electric charge, electric field, and electrostatic force.
Electrostatic forces are non contact forces that can push or pull on items without coming into contact with them. A storm cloud’s internal accumulation of static electricity produces lightning.
In this article, we will study in detail about electrostatics, its related definitions, formulas and examples based on them.
Table of Content
- What is Electrostatics?
- What is Electric Charge?
- Coulomb’s law
- What is Electric Field?
- Electric Flux
- What is an Electric Dipole?
- Electric Lines of Force
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