Question 26: Electromagnetic Induction

Question

A coil of 100 turns carries a current of 5 mA and
creates a magnetic flux of 10$$^{-5}$$ Wb. The
inductance is

Accepted Answer

Given, number of turns, $$N=100$$
Current, $$I=5 \mathrm{~mA}=5 	imes 10^{-3} \mathrm{~A}$$
Magnetic flux, $$\phi=10^{-5} \mathrm{~Wb}$$
Inductance, $$L=$$ ?
We know that,
$$\begin{aligned}N \phi & =L I \
\Rightarrow \quad L & =\frac{N \phi}{I}=\frac{100 	imes 10^{-5}}{5 	imes 10^{-3}} \
& =20 	imes 10^{-2} ~\mathrm{H}=0.2 ~\mathrm{H}
\end{aligned}$$

Answer

0.2 mH

Answer

2.0 mH

Answer

0.02 mH

Answer

None of these

Electromagnetic Induction

A coil of 100 turns carries a current of 5 mA and creates a magnetic flux of 10$^{-5}$ Wb. The inductance is

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