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Give any one use of electromagnet...

Give any one use of electromagnet

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    OSWAAL PUBLICATION|Exercise Exercise|37 Videos

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OSWAAL PUBLICATION-Sample Paper 3-Exercise
  1. What is an electric dipole ?

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  2. State Ampere's circuital law and represent it mathematically.

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  3. Give any one use of electromagnet

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  4. Name the rule which gives the direction of induced current in a conduc...

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  5. What is the wavelength range of X-rays ?

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  6. Whrite the expression for displacement current or Maxwell's displaceme...

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  7. How is the power of lens related to its focal length ?

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  8. Who proposed the wave nature of light?

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  9. What is the SI unit of activity?

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  10. Draw the circuit symbol of n-p-n transistor

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  11. Mention and five properties of electric field lines.

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

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

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

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

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

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

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  18. Give three differences between intrinsic and extrinsic semiconductors

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

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

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