Home
Class 12
PHYSICS
The peak value of an alternating emf E g...

The peak value of an alternating emf E given by
E = `underset(o)(E) ` cos `omega`t
is 10 V and frequency is 50 Hz . At time t = (1/600) s, the instantaneous value of emf is

A

10V

B

`5sqrt3V`

C

5V

D

1V

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Comphension Based|8 Videos
  • ALTERNATING CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Single Correct|10 Videos
  • ALTERNATING CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Archives Integer|1 Videos
  • ATOMIC PHYSICS

    CENGAGE PHYSICS ENGLISH|Exercise ddp.4.3|15 Videos

Similar Questions

Explore conceptually related problems

The peak value of an alternating emf E given by E=(E_0) cos omega t is 10V and frequency is 50 Hz. At time t=(1//600)s the instantaneous value of emf is

An inductor (L = 200 mH) is connected to an AC source of peak emf 210 V and frequency 50 Hz . Calculate the peak current. What is the instantaneous voltage of the source when the current is at its peak value?

An inductor (L = 200 mH) is connected to an AC source of peak emf 210 V and frequency 50 Hz . Calculate the peak current. What is the instantaneous voltage of the source when the current is at its peak value?

An AC voltage is given by E = underset(o)(E) sin 2 pi t / T Then , the mean value of volatage calculated over any time interval of T / 2

The alternating current in a circuit is given by I = 50sin314t . The peak value and frequency of the current are

Two coils have a mutual inductance 0.005 H. The alternating current changes in the first coil according to equation I = underset(o)(I) sin omega t, where underset(o)(I) = 10 A and omega = 100 pi rads^(-1) . The maximum value of emf in the second coil is (in volt)

At time t = 0 , terminal A in the circuit shown in the figure is connected to B by a key and alternating current I(t) = underset(o)(I) cos( omega t), with underset(o)(I) = 1 A and omega = 500 rad s^(-1) starts flowing in it with the initial direction shown in the figure . At t = 7pi / 6omega , the keys is switched from B to D . Now onwards only A and D are connected . A total charge Q flows from the battery to charge the capacitor fully. If C = 20 mu , R = 10 Omega and the battery is deal with emf of 50 V , identify the correct statement(s).

The root-mean-square value of an alternating current of 50 Hz frequency is 10 ampere. The time taken by the alternating current in reaching from zero to maximum value and the peak value of current will be

An alternating voltage is given by: e = e_(1) sin omega t + e_(2) cos omega t . Then the root mean square value of voltage is given by:

An alternating voltage is given by: e = e_(1) sin omega t + e_(2) cos omega t . Then the root mean square value of voltage is given by:

CENGAGE PHYSICS ENGLISH-ALTERNATING CURRENT-Single Correct Asnwer Type
  1. A generator produces a time varying voltage given by V=240 sin 120 t, ...

    Text Solution

    |

  2. The peak value of an alternating emf E given by E = underset(o)(E) ...

    Text Solution

    |

  3. A resistance of 20ohms is connected to a source of an alternating pote...

    Text Solution

    |

  4. Voltage and current in an AC circuit are given by V = 5sin(100pit-pi/6...

    Text Solution

    |

  5. In a certain circuit, current chages with according to i=2sqrtt. Root ...

    Text Solution

    |

  6. Match the following {:(,"Currents","r.m.s. values"),((1),x(0) sin om...

    Text Solution

    |

  7. If i= t^(2), 0 lt t lt T then r.m.s. value of current is

    Text Solution

    |

  8. The rms voltage of the wave form shown is

    Text Solution

    |

  9. The output current versus time curve of a rectifier is shown in the fi...

    Text Solution

    |

  10. an alternating current I in an inductance coil with time according to ...

    Text Solution

    |

  11. Two sinusoidal voltage of the same frequency are shown in the diagram....

    Text Solution

    |

  12. the voltage across a pure inductor is represent in figure. Which one o...

    Text Solution

    |

  13. In pure inductive circuit, the curves between frequency f and reciproc...

    Text Solution

    |

  14. The graphs given below depict the dependence of two reactive impedence...

    Text Solution

    |

  15. Which of the following graphs represent the correct variation of capac...

    Text Solution

    |

  16. Is the following circuit correctly drawn

    Text Solution

    |

  17. An alternating emf is applied across a parallel combination of a resis...

    Text Solution

    |

  18. When 100V. DC is applied across a solenoid a current of 1A flows in it...

    Text Solution

    |

  19. An electric bulb and a capacitor are connected in series with an AC so...

    Text Solution

    |

  20. For a series RLC circuit R=X(L)=2X(C). The impedence of the current an...

    Text Solution

    |