Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 35

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Figure shows electric lines of forces due to charges $Q_{1}$ and $Q_{2} .$ Hence

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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>Assignment>Q 36

Figure shows electric lines of force. If $E_{x}$ and $E_{y}$ are the magnitudes of electric field at points $x$ and $y$ respectively, then

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 37

Electric charge

Q, Q

and

- 2 Q

respectively are placed at the three corners of an equilateral triangle of side

a .

Magnitude of the electric dipole moment of the system is

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 38

An electric dipole placed in a uniform electric field experiences maximum moment of couple when the dipole is placed

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 39

Force of interaction between two co-axial short electric dipoles whose centres are

R

distance apart varies as

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 40

Two charges of

+ 25 \times 10^{- 9}

coulomb and

- 25 \times 10^{- 9}

coulomb are placed

6 m

apart. Find the electric field intensity ratio at points

4 m

from the centre of the electric dipole (i) on axial line (ii) on equatorial line

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 41

The electric force on a point charge situated on the axis of a short dipole is

F .

If the charge is shifted along the axis to double the distance, the electric force acting will be

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 42

An electric dipole is placed at an angle

60 °

with an electric field of strength

4 \times 10^{5} N C^{- 1} .

It experiences a torque equal to

8 \sqrt{3} Nm .

Calculate the charge on the dipole, if dipole is of length

4 cm

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Gamma Question Bank for Medical Physics>Chapter 16 - Electric Charges and Fields>Assignment>Q 43

A charge

q

is situated at the centre of a cube. Electric flux through one of the faces of the cube is