State and explain five practical applications or uses of eddy current in everyday activities

They are applied in electromagnetic braking.Used in separation of metals such as Aluminum from other metals.Used in identifying metals in vending machines.Testing of structure of aircrafts apply eddy currents through procedures of Non destructive examination.They are used in defect detecting and safety hazards application.

Explanation:

Eddy current are loops of electric currents which are induced within conductors when there is a change in magnetic field in the conductor through Faraday's Law of induction.

They are applied in electromagnetic braking. This is where the eddy current acts as brakes to stop moving objects. However, they are used along side mechanical braking systems.

Used in separation of metals such as Aluminum from other metals. Using the eddy current separator, ferrous elements are attracted to the magnet while aluminum being non-ferrous ,is left  separated.

Used in identifying metals in vending machines. These machines use eddy currents to detect fake coins where the fake coins will slow at a certain speed to be identified.

Testing of structure of aircrafts apply eddy currents through procedures of Non destructive examination.

They are used in defect detecting and safety hazards application. Defects in heat exchanger tubes can be detected by eddy currents.

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

This question is incomplete and not physics but i'm  willing to if you can give a better question