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An ideal gas is filled in a closed rigid...

An ideal gas is filled in a closed rigid and thermally insulated container. A coil of `100Omega` resistor carrying current 1 A for 5 minutes supplies heat to the gas. The change in internal energy of the gas is

A

`10 kJ`

B

`20 kJ`

C

`30 kJ`

D

`0 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaU = Q = I^(2) RT = 1^(2) xx 100 xx5 xx 60J`
` =30 KJ (DeltaW = 0)`
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Knowledge Check

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

    A
    6kJ
    B
    10kJ
    C
    3kJ
    D
    12kJ

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    A
    240 KJ
    B
    30 KJ
    C
    60 KJ
    D
    120 KJ

  • An ideal gas is allowed to expand freely against a in a rigid insulated container. The gas undergoes

    A
    An increase in its internal energy
    B
    A decrease in its internal energy
    C
    Neither an increase nor decrease in temperator internal energy
    D
    An increase in temperature.