A resistance coil connected with wire to an external battery is placed inside an adiabatic cylinder fitted with a frictionless piston of area of cross-section $5\times {10}^{-4}{\mathrm{m}}^2$of mass 5 kg and containing an ideal gas. A current 0.2 A flows through the coil which has a resistance 500$\mathrm{\Omega }$ . The constant speed v with which the piston move upwards in order that the temperature of the gas remains unchanged is (P₀ = 105 N/m², g = 10 m/s²)

• A

  0.1 m/s

• B

  0.2 m/s

• C

  0.3 m/s

• D

  0.4 m/s