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Moving Charges ...

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  • Question 1
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    A magnetic field cannot exert any force on a 

  • Question 2
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    A magnetic field can exert force on a

  • Question 3
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    The correct expression for Ampere's law is :

  • Question 4
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    If a charged particle moves through a magnetic field, then effect of the field is to change the particle's

  • Question 5
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    If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be :

  • Question 6
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    Two parallel wires carrying current in the same direction attract each other because of

  • Question 7
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    Suppose that a proton traveling in vaccum with velocity u1u_1 at right angles to a uniform magnetic field experiences twice the force that an α\alpha particle experiences when it is traveling along the same path with velocity u2u_2.The ratio (u1u2)\left (\dfrac {u_1}{u_2}\right ) is

  • Question 8
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    The correct expression for Lorentz force is

  • Question 9
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    Which of the following expressions are applicable to the moving coil galvanometer?

  • Question 10
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    A moving coil galvanometer is based on the

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