How is an ammeter connected in a circuit?

An electric appliance draws a current of $0.4\, A$ when the voltage is $200\, V$. Calculate the amount of charge flowing through it in one hour.

What is the electric charge passing through a cross-sectional area of the conductor per unit time called?

The electric current that always flows in the same direction is called alternating current.

$1\, \mu A = \dots \dots \dots \,mA$

Define the unit of electric current.