Question

State whether true or false:
The current, i that flows through an inductor produces a magnetic flux that is inversely proportional to it.

• A. True
• B. False

Answer 1

The correct option is B False

Magnetic field inside solenoid =$B={\mu }_o\frac{N}{l}i$ where, $\frac{N}{l}$=number of turns per unit length

Now, emf induced= $\varphi =NBA$

$⟹\varphi =N\times {\mu }_o\frac{N}{l}i\times \pi R^2$

$⟹\varphi =\frac{{\mu }_o{N}^2\pi R^2}{l}i$

$⟹\varphi \propto i$

Hence, given statement is $False$.