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Two infinitely long parallel wires carry...

Two infinitely long parallel wires carry equal current in same direction. The magnetic field at a mid point in between the two wires is

A

Twice the magnetic field produced due to each of the wires

B

Half of the magnetic field produced due to each of the wires

C

Square of the magnetic field produced due to each of the wires

D

Zero

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Two infinitely long parallel wires carry equal currents in the same direction .The magnetic field at a mind point in between the two wires is

    A
    Square of the magnetic field produced due to each of the wires
    B
    half of the magnetic field produced due to each of the wires
    C
    twice the magnetic field produced due to each of the wires
    D
    zero

  • Two parallel wires carrying current I and 2I in same direction have magnetic field B at the midpoint between them. If the current 2I is switched off, the magnetic field at that point will be

    A
    B/2
    B
    B
    C
    2B
    D
    3B

  • Two free parallel wires carrying currents in opposite directions

    A
    repel each other
    B
    attract each other
    C
    neither attract nor repel
    D
    may attract as well as repel under different values of currents

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    Two long parallel wires carry equal current i flowing in the same direction are at a distance 2d apart. The magnetic field B at a point lying on the perpendicular line joining the wires and at a distance x from the midpoint is –

    Two long parallel wires carry equal current I flowing in the same direction are at a distance 2d apart. The magnetic field B at a point lying on the perpendicular line joining the wires and at a distance x from the midpoint is

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