The unit of measurement of charge is coulomb.

What is electrical resistivity? In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads $5\, A$. The reading of the ammeter decreases to half when the length of the wire is doubled. Why?

Elements of electric toasters and electric irons are made of an alloy rather than a pure metal. Give two reasons to justify the statement.

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

Why do we use copper and aluminium wire for the transmission of electric current?

Three resistors $R_{1} = 5 \Omega$,$R_{2} = 10 \Omega$,and $R_{3} = 30 \Omega$ are connected in parallel to a $12 \; V$ battery. Which resistor will have the highest current flowing through it?