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Electric Charge...

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  • Question 1
    1 / -0.25

    Which of the following is true for electric charges?

  • Question 2
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    Choose the correct statement regarding the validity of Coulomb's law.

    1. Coulomb's law is valid for charges at rest.
    2. Coulomb's law is valid for charges in motion.
    3. Seperation between the charges must be greater then 10-15 m.
    4. It is valid only for point charges.

  • Question 3
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    Two electric field lines due to a point charge:

  • Question 4
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    Three point charges 10μC, 20μC and 30μC are separated by some distance located at three points. Whole system is in equilibrium. Charges 10μC, 20μC and 30μC exert a force of 30N on 30μC and 20N on 20μC. So, force exerted on point charge 10μC will be:

  • Question 5
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    Choose the correct statements regarding electric charges.

    (i) Electric charge follows principle of superposition of charges.

    (ii) Like charges attract each other

    (iii) Unlike charges attract each other

  • Question 6
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    If an electric dipole is placed parallel to the electric field, then the torque on the dipole will be:

  • Question 7
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    Two equal and opposite charges of 2 nC are located at the points (1, 0, 0) and (-1, 0,0). The electric field E at the origin is, \({\epsilon_0} = \frac{1}{{36\pi }} \times {10^{ - 9}}\;F/m\)

  • Question 8
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    An electrostatic force between two point charges increases when they are:

  • Question 9
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    The force experienced by a charged particle of -6 C in the external electric field is 60 N towards north. The electric field intensity will be:

  • Question 10
    1 / -0.25

    The Coulomb force on a unit charge is acting in ax direction. The direction of the electric field will be:

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