Resistance in RC circuit of time constant 2 seconds is 1000 Ohms. What is value Of C in the circuit?
Correct answer: D. 2000 u farad
- A. 2 u farad.
- B. 20 u farad
- C. 200 u farad
- D. 2000 u farad
Explanation
An RC time constant is given by,t=R×C.Given that,t=2 secondR= 1000 Ohms then,2=1000 x CC = 2/1000C= 0.002C = 2 x 10-3 FC = 2 x 10-3 / 10-6C = 2000 uF
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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Capacitors store electric charge and energy in an electric field between conductors. Work includes capacitance, the relation Q = CV, dielectric materials, charging and discharging, energy formulas, and combinations of capacitors in series and parallel. Electric potential difference is needed to understand why charge and stored energy change.
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