A rigid container with thermally insulated walls contains a gas and a coil of resistance 50 ohm, carrying a current of 1 A. The change in internal energy of the gas after 2 min will be

Options

A. a)6 kJ
B. b)10 kJ
C. c)3 kJ
D. d)12kJ

Answer

A

Explanation

The given `R = 5 =0 Omega `
`i=1 A`
`t =2 min = 2 xx 50 =120s` `H =I ^(2) Rt`
`= (1) ^(2) xx 50 xx 120`
`= 6000 J`
or `= 6 xx 10 ^(3) = 6 kJ`