Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.2>Q 10

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Two charges $- 4 q$ and $q$ are kept at $(- a, 0)$ and $(a, 0)$ respectively. The graph showing the variation of electric field along $x -$ axis is

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Important Questions on Electric Charges and Fields

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.2>Q 11

In the following figure, the electric field on $y -$ axis will be maximum at $y =$

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.2>Q 12

Figure shows charge beads with charges as shown in figure. The charges are placed upon the corners of a square. Rank the magnitude of electric field at the centre in decreasing order.

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.3>Q 13

A wire is bent in the form of a regular pentagon of edge length

a

. A total of charge

q

is distributed over it. Find the electric field at the centre of the pentagon.

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.3>Q 14

A point charge

q

is kept at the centre of a fixed semicircular thread having a uniform charge per unit length

λ

, the radius of the semicircular thread being

R

. The force required to keep the charge stationary is

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.3>Q 15

In which of the following figures, the direction of electric field at point

P

is different from others?

(λ

and

- λ

represent constant linear charge densities)

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.3>Q 16

A circular ring carries a charge

Q

, the variation of electric field with distance

x

measured from centre along axis for

x < < R

can be given as

[R \to

Radius of Ring]

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.3>Q 17

A circular ring carries a charge

Q

, the variation of electric field with distance

x

measured from centre along axis for

x < < R

is given by

E = \frac{k Q x}{R^{3}}

[R \to

Radius of Ring]. The maximum electric field on the axis will be [where

C = \frac{Q}{4 π ε_{0} R^{2}}

]

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Gamma Question Bank for Engineering Physics>Chapter 15 - Electric Charges and Fields>EXERCISE 1.4>Q 20

Which one of the following is correct regarding order of electric field intensity?
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