Q.

Statement A : Biot-Savart’s law and coulomb’s law both depend inversely on the square of distance but E-field produced by
scalar source (charge) and magnetic field produced by a vector source (i dl). 
Statement B: Moving charges or currents produced a magnetic field in the surrounding space.

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a

Both A, B are true

b

A is false, B is true

c

Both A, B are false

d

A is true, B is false

answer is A.

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Detailed Solution

(A) : Yes charge ‘q’ is scalar, but current element i.dl is vector.
(B) : Moving charges or currents produced a magnetic field in the surrounding space.

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Statement A : Biot-Savart’s law and coulomb’s law both depend inversely on the square of distance but E-field produced byscalar source (charge) and magnetic field produced by a vector source (i dl). Statement B: Moving charges or currents produced a magnetic field in the surrounding space.