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Give an expression for force acting on a...

Give an expression for force acting on a charge moving in magnetic field and explain the symbols, when does the force become maximum.

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OSWAAL PUBLICATION-Sample Paper 3-Exercise
  1. Draw the circuit symbol of n-p-n transistor

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  2. Mention and five properties of electric field lines.

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  3. Give an expression for force acting on a charge moving in magnetic fie...

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  4. What is hysterisis? Define the terms 'coercivity' and 'retentivity' of...

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  5. What are eddy currents ? Mention two applications of eddy currents.

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  6. What is a thin prism? Write its deviation expression.

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  7. How do you represent plane polarized and unpolarised light ?

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  8. Define half life of a radioactive element and deduce the expression fo...

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  9. Give three differences between intrinsic and extrinsic semiconductors

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  10. Derive an expression for the electric potential energy of a system of ...

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  11. State and explain Ohm.s law and hence defien ohm.

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  12. Write any four properties of ferromagnetic materials and give an examp...

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  13. Derive the expression for emf induced in a straight conductor moving p...

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  14. State any three feautures of nuclear force

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  15. Distinguish between conductors, insulators and semiconductors on the b...

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  16. Draw a neat labelled block diagram of an AM transmitter.

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  17. Derive an expression for the electric field at a point due to an infin...

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  18. Obtain an expression for equivalent resistance of two resistors connec...

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  19. Derive the expression for magnetic field at a point on the axis of a c...

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  20. Derive the expression for refractive index of the material of the pris...

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