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Four equal and like charges are placed on the four vertices of a square. If the field intensity due to any of the charge at the centre is $E$ then the net electric field intensity at the centre of square will be

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Important Questions on Electric Charges and Fields

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 26

For an electron and a proton kept in the same uniform electric field, the ratio of their accelerations is

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 27

The tracks of three charged particles in a uniform electrostatic field are shown in the figure. Which particle has the highest charge to mass ratio?
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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 28

A force of

2.25 N

acts on a charge of

15 \times 10^{- 4} C

, when the charge is placed in a uniform electric field. The intensity of electric field at that point is

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 29

The electric field at a point is

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 30

In a certain region of space, electric field is along the

z

-direction throughout. The magnitude of the electric field is, however, not constant but increases uniformly along the positive

z

-direction, at the rate of

10^{5} N / C

per meter. What are the force and torque experienced by a system having a total dipole moment equal to

10^{- 7} Cm

in the negative $z$ -direction?

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 31

Two tiny spheres carrying charges

1.5 μC

and

2.5 μC

are located

30 cm

apart. Find the potential and electric field at the midpoint of line joining the two charges. Take,

\frac{1}{4 π \in_{0}} = 9 \times 10^{9} N m^{2} C^{- 2}

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 32

Two point charges

q_{A} = 3 µ C

and

q_{B} = - 3 μC

are located

20 cm

apart in vacuum. What is the electric field at the midpoint

O

of the line

AB

joining the two charges? If a negative test charge of magnitude

1.5 \times 10^{- 9} C

is placed at this point, what is the force experienced by the test charge? Take,

\frac{1}{4 π \in_{0}} = 9 \times 10^{9} {Nm}^{2} C^{- 2}

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Physics Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Electric Charges and Fields>Exercise>Q 38

In nature, the electric charge of any system is always equal to-

Four equal and like charges are placed on the four vertices of a square. If the field intensity due to any of the charge at the centre is E then the net electric field intensity at the centre of square will be

Important Questions on Electric Charges and Fields

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Four equal and like charges are placed on the four vertices of a square. If the field intensity due to any of the charge at the centre is $E$ then the net electric field intensity at the centre of square will be