47. The time constant for the discharge of this capacitor is A. 5 s B. 4s 2 2 D.

Question

47. The time constant for the discharge of this capacitor is A. 5 s B. 4s 2 2 D. 1 s E. The capacitor doesn't discharge because the resistors cancel each other. 1F 48. Which resistor dissipates the greatest power 49. The length of a wire is doubled and at the same time it radius is doubled. What is the change in the resistance of the wire? A. It stays the same. B. It is doubled C. It is reduced by a factor of 2. D. It is reduced by a factor of 4. 50. Kirchhoff's voltage law is an example of conservation of energy A. True B. False 51. A R resistor dissipates a certain amount of power when connected to a constant voltage source. If another series with it, the amount of power R A. increase resistor is connected in dissipates will B. decrease C. remain the same

Explanation / Answer

47 - Total Resistance = 2 + 2 = 4 ohm
   Capacitance = 1F

   Time Constant of RC Circut is R * C =
Time Constant of RC Circut is = 4 * 1
Time Constant of RC Circut is = 4 s Answer

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