» CBSE Physics Electrostatics Expected Questions for Quick Revision : Unit I : CBSE Sample Question Papers

CBSE Physics Electrostatics Expected Questions for Quick Revision : Unit I Filed under: Class XII Physics Expected Question 5 Marks Questions (Long Answer Type) 1. Explain the construction, basic principle and working of a Van de Graff generator with the help of a diagram. Answer : 2. Define a dielectric. A dielectric slab of thickness t is kept between the plates of a parallel plate condenser separated by a distance d. Derive the expression for capacity for t < < d. Answer : 3. Define electric dipole moment. Derive an expression for the electric field at any point along the equitorial line or neutral axis of an electric dipole. Answer : 4. Two charges q1 = —0 - 2 C and q2 — + 0.4C are placed 0 1m apart. Calcualte the force at {a) midway charge (b) a point on the line joining q1 and q2 such that it is 0-5 m among from q2 and 0.15 m away from q1. Answer : 5. State Gauss’ theorem in electrostatics. Apply the theorem to calculate the electric field inside a hollow conducting sphere. Answer : Pages: 1 2 3

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