Electric Charges and Fields: Class 12 Physics Q&A
3 free answers on Electric Charges and Fields (Physics) for Class 12 students, across CBSE, ICSE and State boards. Includes questions such as “what is an electric dipole moment?”, “What is electric flux?”
Question & Answer
Questions
- PhysicsClass 12CBSE
Magnetic Moment of a Current-Carrying Wire Bent into a CircleWire length = 2 m, current = 3.14 A (≈ π A). Find magnetic moment M.
Step-1: Radius of circle:2πr = 2 ⇒ r = 1/π mStep-2: Area:A = πr² = π × (1/π)² = 1/π m²Step 3 — Magnetic moment:M = I × A = π × (1/π) = 1 A·m²Answer: M = 1 A·m²
- PhysicsClass 12All
what is an electric dipole moment?
An electric dipole moment is a concept in physics that describes the distribution of electric charge within a system of two equal and opposite electric charges, separated by a certain distance. It is a measure of the polarity and strength of an electric dipole, which is a fundamental concept in electromagnetism. Key points about electric dipole moments include: Two Equal and Opposite Charges: An electric dipole consists of two point charges of equal magnitude
- PhysicsClass 12All
What is electric flux?
Electric flux is a concept in electromagnetism that describes the electric field's flow or "flux" through a given surface. It is a measure of the electric field's strength passing through a particular area or surface and is used to understand how electric field lines interact with surfaces and objects. Electric flux is defined mathematically as: Electric Flux (Φ) = E ⋅ A ⋅ cos(θ) Where: Φ is the electric flux (measured in coulombs