General Physics Ques 16
- The SI unit of the inductance, the henry can by written as
(1998, 2M)
(a) weber/ampere
(b) volt-second/ampere
(c) joule/(ampere) $)^2$
(d) ohm-second
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Answer:
Correct Answer: 16.( a, b, c, d )
Solution:
- (a) $L=\frac{\phi}{i}$ or henry $=\frac{\text { weber }}{\text { ampere }}$
(b) $e=-L\left(\frac{d i}{d t}\right)$
$\therefore L=-\frac{e}{(d i / d t)}$ or henry $=\frac{\text { volt }- \text { second }}{\text { ampere }}$
(c) $U=\frac{1}{2} L i^2 \quad \therefore \quad L=\frac{2 U}{i^2} \quad$ or $\quad$ henry $=\frac{\text { joule }}{\text { (ampere) })^2}$
(d) $\quad U=\frac{1}{2} L i^2=i^2 R t$
$\therefore \quad L=R t$ or henry $=$ ohm-second
BETA
