The charge per proton is 1.6 x 10-19 C 2.6 x 10-19 C 0.6 x 10-19 C 1.6 x 10-13 C

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Correct Answer

1.6 x 10^-19 C

Explanation

Because charge on proton is positive but numerically equal to that on electron.

Materials and Components problems

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1. Assertion (A): If an atom of polarizability a is placed in homogeneous field E, the energy stored is 0.5 aE².
Reason (R): Capacitance of an isolated conducting sphere R in vacuum is 4 p?₀ R farads.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

4. If ?_p is permanent dipole moment and T is absolute temperature, the orientation polarization of polyatomic gases is
Options
A. proportional to ?_p²T
B. proportional to
C. proportional to ?_p T
D. proportional to

5. The most important set of specifications of transformer oil include
Options
A. dielectric strength and viscosity
B. dielectric strength and flash point
C. viscosity and flash point
D. flash point and viscosity

6. The capacitance of a capacitor is not affected by
Options
A. area of plates
B. thickness of plates
C. ?_r
D. distance between plates

7. Hall effect is observed in a specimen (metal or semi- conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
Options
A. normal to both current and magnetic field
B. in the same direction as current
C. in a direction anti parallel to magnetic field
D. none of the above

8. With increase in temperature, the electrical conductivity would
Options
A. increase in metals as well as in intrinsic semiconductor
B. increase in metals but decrease in intrinsic semiconductor
C. decrease in metals but increase in intrinsic semiconductor
D. decrease in metals as well as in intrinsic semiconductor

9. Yettrium-iron garnet (Y₂Fe₅O₁₂) is a soft magnetic material suitable for applications involving
Options
A. dc
B. 50 Hz ac
C. ac of a few K Hz
D. ac of a few hundred MHz

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