Question

24.A fully charged capacitor has a capacitance C.It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity s and mass m.If the temperature of the block is raised by Delta T,the potential difference V across the capacitance is

Answer 1

The electrical potential energy stored in the capacitor is =  C V² /2

This energy is dissipated in the circuit through the resistance wire. That heat is absorbed by the insulated block.  Apply conservation of energy :

Heat absorbed = m s ΔT = C V² /2
       =>  V = √[2 m s ΔT / C]

Answer 2

Answer:

The electrical potential energy stored in the capacitor is =  C V² /2

This energy is dissipated in the circuit through the resistance wire. That heat is absorbed by the insulated block.  Apply conservation of energy :

Heat absorbed = m s ΔT = C V² /2

      =>  V = √[2 m s ΔT / C]

Explanation: