a diagram of a circuit using conventional symbols for all the components.

A symbol that us reimbursed all over the world.

a circuit where there is more than one pathway and every pathway receives the full voltage.

a circuit where the electric current only has one pathway.

a small sign used on a diagram to represent a real thing: for example tick means correct and cross mean wrong

the unit for measuring strength of electricity.

the strength if electricity needed for an electrical component or appliance to work.