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  • Question 1
    1 / -0

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

  • Question 2
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    The number of lines of force passing through a unit area placed perpendicularly to the magnetic lines of forces is termed as

  • Question 3
    1 / -0

    Magnetic effect of current was discovered by:

  • Question 4
    1 / -0

    Assertion: Cyclotron does not accelerate electron.

    Reason: Mass of the electron is very small.

    (A) If both assertion and reason are true and the reason is the correct explanation of the assertion.

    (B) If both assertion and reason are true but reason is not the correct explanation of the assertion.

    (C) If assertion is true but reason is false.

    (D) If the assertion and reason both are false.

  • Question 5
    1 / -0

    A one metre long wire is lying at right angles to the magnetic field. A force of 1 kg wt. is acting on it in a magnetic field of 0.98 Tesla. The current flowing in it will be

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