What is the order of current flowing in the nerves of our body?

“In lightning in the sky,there is a steady flow of charge”. -True or False?

The following figure shows four situations in which positive and negative charges move horizontally through a region and gives the rate at which each charge moves. Rank the situations according to the effective current through the region,greatest first.

In a neon discharge tube,$2.9 \times 10^{18}$ $Ne^+$ ions move to the right each second,while $1.2 \times 10^{18}$ electrons move to the left per second. The electron charge is $1.6 \times 10^{-19} \, C$. The current in the discharge tube is:

$5 \, A$ of current is passed through a metallic conductor. The charge flowing in one minute in coulombs will be:

$A$ current through a wire depends on time as $i = \alpha_{0} t + \beta t^{2}$ where $\alpha_{0} = 20 \, A/s$ and $\beta = 8 \, As^{-2}$. Find the charge crossed through a section of the wire in $15 \, s$ (in $C$).