Electrostatic| Practice MCQs Physics for Mdcat | mosaicbro.com

Electrostatic| Practice MCQs Physics for Mdcat

7 of 93 questions (Page 5 of 14)

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29 The lines of forces do not exist inside the ______:
Correct Answer: A
Explanation: Inside a conductor, the electric field is zero in electrostatic equilibrium.
30 As we move away from the field the field charge, the density of the lines of force ______:
Correct Answer: C
Explanation: The density of electric field lines decreases with distance from the charge.
31 Electric flux is given as:
Correct Answer: B
Explanation: Electric flux is the dot product of electric field and area vector: $\Delta \phi_E = \vec{E} \cdot \Delta \vec{A}$.
32 Electric flux is a ______ quantity:
Correct Answer: A
Explanation: Electric flux is a scalar quantity as it is the dot product of two vectors.
33 When vector area $\Delta \vec{A}$ makes an angle “0” with the electric intensity ______:
Correct Answer: C
Explanation: Electric flux is $\phi_E = \vec{E} \cdot \Delta \vec{A} \cos \theta$.
34 When an angle between $\vec{E}$ and $\Delta \vec{A}$ is 0°, then flux passing through an area will be ______:
Correct Answer: B
Explanation: Flux is maximum when the angle between $\vec{E}$ and $\Delta \vec{A}$ is 0°.
35 When an angle between $\vec{E}$ and $\Delta \vec{A}$ is 90°, then flux passing through an area will be ______:
Correct Answer: A
Explanation: Flux is zero when the angle between $\vec{E}$ and $\Delta \vec{A}$ is 90°.
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