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 charge \(q,\) with the former being related to the field produced by a scalar source, \((Idl)\) while the latter being produced by a vector source, \(q.\)
 
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic:  Biot-Savart Law |
 53%
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An element \(\Delta l=\Delta x \hat{i}\) is placed at the origin and carries a large current of \(I=10~\text A\) (as shown in the figure). What is the magnetic field on the \(y\text-\)axis at a distance of \(0.5~\text m?\) 
\((\text{Given}~\Delta x=1~\text{cm})\)

 1. \(6\times 10^{-8}~\text{T}\) 2. \(4\times 10^{-8}~\text{T}\)
3. \(5\times 10^{-8}~\text{T}\) 4. \(5.4\times 10^{-8}~\text{T}\)
Subtopic:  Biot-Savart Law |
 80%
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