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The electric potential at a point in fre...

The electric potential at a point in free space due to a charge `Q` coulomb is `Q xx 10^(11)` volts. The electric field at that point is

A

`12pi in_(0) Q xx 10^(22)Vm^(-1)`

B

`4pi in_(0)Q xx 10^(23)Vm^(-1)`

C

`12pi in_(0) Q xx 10^(20)Vm^(-1)`

D

`4pi in_(0) Q xx 10^(20) Vm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`V = (1)/(4pi in_(0)) (q)/(r )`
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NARAYNA-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Exercise -1 (C.W)
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  2. The potential at a point due to charge of 5xx10^(-7)C located 10 cm aw...

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  3. The electric potential at a point in free space due to a charge Q coul...

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  4. Electric field intensity at a point B due to a point charge Q kept ...

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  5. The electric potential in volts due to an electric dipole of dipole mo...

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  6. The electric potential in volts due to an electric dipole of dipole mo...

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  7. The electric potential due to an electric dipole of dipole moment 2 xx...

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  8. There is an electric field E in x-direction. If the work done on movin...

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  9. The electric potential V (in volt) varies with x (in metre) according ...

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  10. The electric potential decreases unifromly from 120 V to 80 V as one ...

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  11. Charges +q -4q and +2q are arranged at the corners of an equilateral t...

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  12. Three charges -q, Q and -q are placed at equal distances on a straight...

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  13. A system consists of two charges 4 mu C and -3 muC with no external fi...

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  14. (a) In a quark model of elementary particles, a neutron is made of one...

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  15. A dipole of electric dipole moment p is placed in a uniform electric f...

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  16. The work done in deflecting a dipole through 180^(@) from field direct...

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  17. Two conducting spheres of radii r(1) and r(2) are equally charged. The...

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  18. A conducting sphere of radius R is charged to a potential of V volts. ...

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  19. A non conducting sphere of radius R is charged uniformly. At what dist...

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  20. Two charged spherical conductors of radii R(1) and R(2) when connected...

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