Choose the correct options (a) SI unit of magnetic flux is...

a) SI unit of magnetic flux is henry-ampere: - Magnetic flux ($\Phi$) is defined as (B \times A) (Magnetic field \times Area), with the SI unit of Weber (Wb). - Alternatively, from Flux = (L \times I) (Inductance (\times) Current), the unit would be Henry (\times) Ampere ((\mathrm{H}^\times \mathrm{~A})). - Since Weber is equivalent to Henry-Ampere, this statement is Correct. b) Sl unit of coefficient of self-induction is J/A: - Coefficient of self-induction (L) has the Sl unit of Henry (H). - Energy stored in an inductor is (U=(1 / 2) \times L \times I^{2}). So, (\mathrm{L}=2 \mathrm{U} / $\mathrm{I}$^{2}). - Units would be (\mathrm{Joules} / \mathrm{(Ampere)}^2 = J/A^2). - Therefore, J/A is incorrect. This statement is Incorrect. C) SI unit of coeiicient of seif Induction is voit - second/ampere: - From Faraday's law for self-induction, EMF (=-L \times(d I / d t)). - So, L = - EMF / (dI/dt) . - Units would be Volts / (Amperes / second) = (Volt * second) / Ampere . - This statement is Correct. d) SI unit of magnetic induction is weber: - Magnetic induction (which is another term for Magnetic field, B) has the SI unit of Tesla (T). - Weber (Wb) is the unit of magnetic flux ($\Phi$). - Therefore, this statement is Incorrect. Matching with Options: Statements (a) and (c) are correct.