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A charged capacitor of capacitance 40 mu...

A charged capacitor of capacitance `40 muF` is discharged through a `50Omega` resistance. Determine the time constant of the circuit.

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Knowledge Check

  • A charged capacitor of capacitance C is discharging through a resistor of resistance R. At what time the charge on the capacitor is equal to one half of its initial value?

    A
    `(RC ) /(2)`
    B
    `(RC)/(log_(e)2 )`
    C
    RC `"log"_(e) 2`
    D
    `(1)/(RC) "log"_(e) 2 `

  • A capacitor of capacitance 50 muF is charged to 100 volts. Its energy is equal to

    A
    `25 xx 10^(-2) J`
    B
    `25 xx 10^(-3) J`
    C
    `25 xx 10^(-4) J`
    D
    `25 xx 10^(-6) J`

  • A charged capacitor is discharged through a resistance. The time constant of the circuit is eta . Then the value of time constant for the power dissipated through the resistance will be

    A
    `eta`
    B
    `2eta`
    C
    `eta/2`
    D
    zero

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    A capacitor with initial charge q_0, is discharged through a resistor. What multiple of the time constant tau gives the time the capacitor takes to lose (a) the first 25% of its charge and (b) 50% of its charge?

    A capacitor of capacitance 50 muF is charged to 10 V. Its electrostatic potential energy is

    A capacitor discharges through a resistance. The stored energy U_0 in one capacitive time constant falls to

    A capacitor of capacitance 20muF is connected in series with 25Omega resistance to 240 V, 50 Hz AC. The maximum current in the circuit is

    As uncharged capacitor of capacitance 8.0muF is connected to a battery of emf 6.0V through a resistance of 24Omega , then The current in the circuit at one time constant after the connections are made is

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