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The frequency of an alternating current ...

The frequency of an alternating current is 50 Hz .In what time will the value of current rise to rms value from zero?

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The correct Answer is:
`[2.5times10^-3s]`
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CHHAYA PUBLICATION-ALTERNATING CURRENT -Problem Set-I
  1. The frequency of an alternating current is 50 Hz .In what time will th...

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  2. An alternating current is given by the equation I=I1sinomegat+I2cosome...

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  3. The line voltage of a house, measured by an ac voltmeter is 324 V. If ...

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  4. The voltage of an source varies with time according to the equation ,V...

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  5. What is the rms value of the alternating emf E=10sin100pitcos100pit?

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  7. The rms values of the terminal potential differences of R ,L and C of ...

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  8. A 15.0muF capacitor is connected to 220V,50Hz source. Find the capacit...

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  9. An ac voltage of 100V,50Hz is connected across a 20Omega resistor and ...

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  10. A bulb of resistance 10Omega connected to an inductor pf inductance L ...

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  11. A capacitor, a resistor ad a 40 mH inductor are connected in series to...

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  12. The frequency of applied of ac voltage to an inductive coil is 1000Hz....

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  13. What should be the percentage rise of impedance, the pure resistance r...

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  14. What is the Q factor of a series LCR circuit with L = 2 H, C=32μF and...

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  15. The inductance in a closed circuit is 40mH and the capacitance is 1muF...

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  16. The length and breadth of a rectangular coil are 10cm and 8cm, respect...

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  17. A rectangular coil of area 20cm times 15cm and of 485 turns is rotatin...

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  18. A transformer carries 8 A current in the primary of 100 turns. If the ...

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