CBSE Class 10 Answered

• Using the principle of conservation of energy we know that the work done by the system is equal to the energy supplied to that system.
• The potential difference is defined as the work done by the circuit to move a unit charge once through the complete circuit.

           

• For moving each coulomb of charge i.e one coulomb of charge at a time through the circuit with a 6 V battery, the work done will be

          

• Therefore, the energy given to each coulomb of a unit charge in the circuit with a 6 V battery is 6 Joules.