Question

The SI unit of inductance, the henry, can be written as :

• A. weber / ampere
• B. volt second / ampere
• C. joule / ampere${}^2$
• D. ohm second

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A weber / ampere
B volt second / ampere
C joule / ampere${}^2$
D ohm second

$L\frac{dI}{dt}=emf=\frac{d\varphi }{dt}$

a) $\left[L\right]=weber/ampere$

b) $\left[L\right]=volt.second/ampere$

c) $Joule=volt\times ampere\times second$

$\Rightarrow volt\times second=Joule/ampere$

$\Rightarrow \left[L\right]=joule/amper{e}^2$

d) $V=IR\Rightarrow volt=ampere.ohm$

$\Rightarrow \left[L\right]=ohm.second$.