How much energy is given to each coulomb of charge passing through a 6 V battery?

The p.d. Between the ends of a wire of resistance 5 ohm, if 720 coulomb of charge passes through it per minute.

During electrolysis of a solution of AgNO_(3) , 9650 coulombs of charge pass through the electroplating bath, the mass of silver deposited on the cathode will be

Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.

A parallel plate capacitor has a capacity 80xx10^(-6)F , when air is present between its plates. The space between the plates is filled with a dielectric slab of dielectric constant 20. The capacitor is now connected to a battery of 30V by wires. The dielectric slab is then removed. Then, the charge passing through the wire is

Two capacitors A and B of capacities C and 2C are connected in parallel and the combination is connected to a battery of V volts. After the charging is over , the battery is removed. Now a dielectric slab of K=2 is inserted between the plates of A so as fill the completely. The energy lost by the system during the sharing of charges is (i) With battery of parallel combination :

What is the name given to wires attached to LED ? How are these wires connected to a battery ?