Student Login

Home›Chapters›Capacitors PYQs›Energy Stored & Force between Plates›Question 37

JEE Main 2005 (AIEEE) · Energy Stored & Force between Plates

Energy Stored & Force between Plates question from JEE Main 2005 (AIEEE)

Q37JEE Main 2005 · AIEEEMedium

Energy Stored & Force between Plates

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 capacitor is

Show answer and solution

Answer: (c)

Stored energy becomes heat in the block: $\frac{1}{2}Cv^2 = ms\Delta T$ .
$v^2 = \frac{2ms\Delta T}{C}$
So the answer is (c) $\sqrt{\frac{2ms\Delta T}{C}}$ .

Report a mistake

More questions on Energy Stored & Force between Plates

The work done in placing a charge of 8 × 10⁻¹⁸ coulomb on a condenser of capacity 100…JEE Main 2003 (AIEEE)
Energy per unit volume for a capacitor having area A and separation d kept at potential…NEET 2001 (AIPMT)
The energy stored in a capacitor of capacity C and potential V is given byNEET 1996 (AIPMT)
A 4 capacitor is charged to 400 V. If its plates are joined through a resistance of 2 kΩ…NEET 1995 (AIPMT)
A parallel plate air capacitor having area of each plate ' A ' and the distance between…MHT CET 2026 (20 Apr, Shift 1)
A capacitor of capacitance C has charge Q and energy stored in it is W. If the charge is…MHT CET 2026 (18 Apr, Shift 1)
The electrostatic force ( F) between the metal plates of an isolated parallel plate…MHT CET 2026 (15 May, Shift 1)
The electric field between the plates of a parallel plate capacitor is 'E'. If the charge…MHT CET 2026 (16 Apr, Shift 1)