TN Phy, 12th Unit - 1, Electrostatics.

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Class : XII

Subject : Physics

Unit : 1

Unit Name : Electrostatics

IMPORTANT QUESTIONS

2 Marks

1. Define ‘Electric dipole’and dipole moment?

2. Define ‘electrostatic potential”.

3. Define ‘electric flux’. Mention its unit.

4. Define ‘capacitance’. Give its unit.

5. What is corona discharge?

6. State Coulomb’s law.

3 Marks

1. Derive an expression for the torque experienced by a dipole due to a uniform electric field.

2. Derive an expression for electrostatic potential due to a point charge.

3. Obtain the expression for capacitance for a parallel plate capacitor.

4. Obtain the expression for energy stored in the parallel plate capacitor.

5 Marks

1. Calculate the electric field due to a dipole on its axial line.

2. Derive an expression for electrostatic potential due to an electric dipole.

3. Obtain the expression for electric field due to an infinitely long charged wire.

4. Derive the expression for resultant capacitance, when capacitors are connected in series and in parallel.

5. Explain in detail the construction and working of a Van de Graaff generator.

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