Fundamentholfundamenthol
NEET2022Physics
Q.

Given below are two statements:

Statement I : Biot-Savart's law gives us the expression for the magnetic field strength of an infinitesimal current element(Idl) of a current carrying conductor only.

Statement II : Biot-Savart's law is analogous to Coulomb's inverse square law of change q, with the former being related to the field produced by a scalar source, Idl while the latter being produced by a vector source, q.

In light of above statement choose the most appropriate answer from the options given below:

  1. A

    Both statement I and Statement II are incorrect

  2. B

    Statement I is correct and Statement II is incorrect

  3. C

    Statement I is incorrect and Statement II is correct

  4. D

    Both statement I and Statement II are correct

Solution

Biot-Savart's law: .

It correctly expresses the contribution to the magnetic field from an infinitesimal current element of a current carrying conductor, so Statement I is correct.

The source is a vector quantity (not a scalar), while the electric charge in Coulomb's law is a scalar. Statement II reverses these, so it is incorrect.

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