An LRC circuit has component values such that the circuit is initially at critical damping. Which of the following modifications would make the circuit underdamped?
A)
decreasing the capacitance C, keeping the inductance L and the resistance R the same
B)
reducing both the inductance and the capacitance by half, keeping the resistance R the same
C)
increasing the resistance R, keeping the inductance L and the capacitance C the same
D)
doubling both the inductance and the capacitance, keeping the resistance R the same
E)
decreasing the inductance L, keeping the capacitance C and the resistance R the same
Question 2
A certain amount of a monatomic gas is maintained at constant volume as it is cooled by 50 K. This feat is accomplished by removing 400 J of energy from the gas. How much work is done by the gas?
A)
zero
B)
200 J
C)
400 J
D)
-400 J
E)
none of the above
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