Home › UP Board Class 12 › Magnetism & EMI › The SI unit Henry (H) is equivalent to:
The SI unit Henry (H) is equivalent to:
A$\text{Wb}\cdot\text{A}$
B$\text{V}\cdot\text{s}\cdot\text{A}^{-1}$
C$\text{T}\cdot\text{m}^2$
D$\text{V}\cdot\text{A}^{-1}$
Answer & Solution
Correct answer: B. $\text{V}\cdot\text{s}\cdot\text{A}^{-1}$
From $\varepsilon = -L \dfrac{dI}{dt}$, $L$ has units of $\text{V}/(\text{A/s}) = \text{V}\cdot\text{s}\cdot\text{A}^{-1}$. This is the same as $\text{Wb}/\text{A}$ since $1\,\text{Wb} = 1\,\text{V}\cdot\text{s}$.
Related questions
A storage battery of emf 8.0 V and internal resistance 0.5 $\Omega$ is charged by a 120 V The number density of free electrons in a copper wire is $8.5 \times 10^{28}\ \text{m}^{-3A heating element has resistance 100 $\Omega$ at 27.0 °C. Its temperature coefficient of rA wire of length 15 m and uniform cross-section $6.0 \times 10^{-7}\ \text{m}^2$ has a meaThe statement "$V = IR$ is itself the statement of Ohm's law" is, according to the text, iCurrent through an area of cross-section is treated as a scalar quantity in this chapter eA Wheatstone bridge has arms AB = 100 $\Omega$, BC = 10 $\Omega$, CD = 5 $\Omega$, DA = 60In a Wheatstone bridge the unknown resistance is placed in the fourth arm. Known resistanc