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Three identical long solenoid P,Q and R ...

Three identical long solenoid P,Q and R are connected to each other as shown in fig. If the magnetic field at the centre of P is 2.0T, what would be the field (inT) at the centre of Q? Assume that the field due to any solenoid is confined within the volume of that solenoid only.

Text Solution

Verified by Experts

The correct Answer is:
`(1)`
(1) As the solenoids are identical , the currents in Q and R will be
the same and will be half the current in P. The magnetic field
within a solenoid is given by `B=mu_0ni`. Hence the field in Q will
be equal to the field in R and will be half the field in P, i.e., 1.0T.
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Knowledge Check

  • Statement1: The magnetic filed at the ends of very long current carrying solenoid is half of that at the centre. Statement2: If the solenoid is sufficiently long, the field within it is uniform.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is the correct explanation of assertion.
    C
    If assertion is true but reason is false
    D
    If both assertion and reason are false.