What is hot wire voltmeter?

In pure inductive circuit, the curves between frequency $f$ and reciprocal of inductive reactance $\frac{1}{X_{\mathrm{L}}}$ is

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$