Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 6

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Smallest unit of charge is

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Important Questions on Electric Charges and Fields

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 7

Find the number of electron that should be removed from a coin so that it acquires a charge of

10^{- 6}

coulomb

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 8

Two identical small bodies each of mass

m

and charge

q

are suspended from two strings each of length

I

from a fixed point. This whole system is taken into an orbiting artificial satellite, then find the tension in strings

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 9

Two point charges

+ 4 q

and

+ q

are separated by distance

r

, where should a third point charge

Q

be placed that the whole system remains in equilibrium

?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 10

If two identical spheres having charge

16 μ C

and

- 8 μ C

are kept at certain distance apart, then the force is

F

. They are touched and again kept at the same distance, the force becomes

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 11

A deuteron and an

α

-particle are placed in an electric field. The force acting on them are

F_{1}

and

F_{2}

and their accelerations are

a_{1}

and

a_{2}

respectively, then

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 12

Three equal charges $+ Q$ each are at the corners of an equilateral triangle as shown. The intensity of electric field at $O$ will be

Question Image

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 13

Two very small spheres

A

and

B

are charged with

+ 10

and

+ 20

coulomb respectively and separated by a distance of

80 cm

. The electric field at point on the line joining the centres of the two spheres will be zero at almost how much distance from

A

?

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>EXERCISE>Q 14

An electric dipole having charges

+ q

and

- q

are at a separation

r

. At distance

d > > r

along the axis of the dipole, the field is proportional to