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An wire of resistance R is elongated n-f...

An wire of resistance R is elongated n-fold to make a new uniform wire. The resistance of new wire

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UNITED BOOK HOUSE-QUESTION PAPER 2018-EXAMPLE
  1. What is the rms value of the current i=5sqrt2sin 100pit A?

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  2. Why does a photo-diode function in reverse bias?

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  3. An wire of resistance R is elongated n-fold to make a new uniform wire...

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  4. Show diagrammatically the behavior of magnetic field lines in presence...

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  5. Show diagrammatically the behavior of magnetic field lines in presence...

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  6. A place electromagnetic wave Ez = 100 cos(4 \times10^-7 z - 50 t)V/m p...

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  7. What is displacement current? Why is it necessary?

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  8. Draw the curve showing the variation of binding energy per nucleon as ...

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  9. The radius of nucleus: R=R0A^(1/3) (R0=constant, A=mass No.). Taking t...

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  10. What is an antenna? Find the length of a dipole antenna for a carrier ...

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  11. Show that electric field intenstity on the surface of a charged conduc...

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  12. Why are electric lines of force not closed loop?

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  13. The electric potential at a point (x,y,z) is given by V=-x^2y-xz^3+4. ...

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  14. Show that electric field intensity is normal to equipotential surface.

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  15. What will be the charge on the capacitor in the circuit given below?

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  16. Find the energy stored in the capacitor.

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  17. Find out the expression for the magnetic field at a point on the axis ...

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  18. Two long parallel straight wires P& Q separated by a distance 5 cm in ...

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  19. Explain total internal reflection from law of refraction.

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  20. A ray of lilght is incident at a small angle theta on a rectangular gl...

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