Home
Class 12
PHYSICS
Mutual inductance of two coils is 0.005H...

Mutual inductance of two coils is 0.005H, ac in primary coil, `I=I_(0)sinomegat`, where `I_(0)=10A` and `omega=100pi` rad/s. What is the maximum emf in the secondary coil?

Text Solution

Verified by Experts

ac in primary coil, `I=I_(0)sinomegat`
`therefore (dI)/(dt)=omegaI_(0)cosomegat`
So, `e_(2)=-M(dI)/(dt)` [here M = mutual inductance]
`=-MomegaI_(0)cosomegat`
So the maximum emf in the secondary coil
`=MomegaI_(0)=0.005xx100pixx10=15.7V`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise SECTION RELATED QUESTIONS|29 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise HOTS|19 Videos

  • ELECTRIC POTENTIAL

    CHHAYA PUBLICATION|Exercise CBSE Scanner|13 Videos

  • ELECTROMAGNETIC WAVES

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|17 Videos

Similar Questions

Explore conceptually related problems

The mutual inductance between two adjacent coils is 1.5 H. If the current in the primary coil changes from 0 to 20 A in 0.05 s, determine the average emf induced in the secondary coil. If the number of turns in the secondary coil is 800, what change in flux will be observed in it?

A coil of inductance 0.50 H and resistance 100Omega is connected to a 240 V, 50Hz ac supply. what is the maximum current in the coil?

A coil of inductance 0.50 H and resistance 100Ω is connected to a 240 V, 50 Hz ac supply. What is the maximum current in the coil?

The radius of each of two mutually perpendicular concentric coils is 2pi cm. Magnetic induction at the centre of the coils is 10^(-4)Wb.A^(-1) . If the current in the first coil be 8 A then what is the value of cuurent (in A) in the second coil? [mu_(0)=4pixx10^(-7)Wb.A^(-1).m^(-1)]

What is the rms value of an alternating current , I=I_0sinomegat ?

Transformer is a device used to increase or decrease the voltage in the transmission line according to requirement, Generally the input line voltage is fed in a primary coil and the output line voltage is obtained from the terminals of another coil In an ideal transformer, the primary and secondary coils are linked is such a way that there is no loss of magnetic flux and electrical energy. In an ideal transformer, if the number of turns and input voltage across the terminals of the primary coils be N_1 and V_1 , then the output voltage at the two terminals of the secondary coil V_2=V_1.N_2/N_1 , where N_2 is the number of turns in the secondary coil . In question (i) if the input power of the transformer be 44 W, then output power is

Self-inductance of a coil is 2mH, current through this coil is, I=t^(2)e^(-t) (t = time). After how much time will the induced emf be zero?

Transformer is a device used to increase or decrease the voltage in the transmission line according to requirement, Generally the input line voltage is fed in a primary coil and the output line voltage is obtained from the terminals of another coil In an ideal transformer, the primary and secondary coils are linked is such a way that there is no loss of magnetic flux and electrical energy. In an ideal transformer, if the number of turns and input voltage across the terminals of the primary coils be N_1 and V_1 , then the output voltage at the two terminals of the secondary coil V_2=V_1.N_2/N_1 , where N_2 is the number of turns in the secondary coil . The ratio of number of turns of the primary and secondary coils of an ideal transformer is 2:1 IF the input voltage is 440 V, then output voltage is if the input power of the transformer be 44 W, then output power is In the above mentioned transformer the input and output currents are respectively.

If the emf of an ac circuit be E=E_0 sinomegatand current I=I_("cosomegat") , what is the power dissipated in the circuit?

CHHAYA PUBLICATION-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-CBSE SCANNER
  1. Mutual inductance of two coils is 0.005H, ac in primary coil, I=I(0)si...

    Text Solution

    |

  2. A bar magnet is moved in the direction indicated by the arrow between ...

    Text Solution

    |

  3. The motion of copper plate is damped when it is allowed to oscillate b...

    Text Solution

    |

  4. A rectangular conductor LMNO is placed in a uniform magnetic field of ...

    Text Solution

    |

  5. A wheel with 8 metallic spokes each 50 cm long is rotated with a speed...

    Text Solution

    |

  6. How does the mutual inductance of a pair of coils change when distan...

    Text Solution

    |

  7. How does the mutual inductance of a pair of coils change when number...

    Text Solution

    |

  8. A light metal disc on the top of an electromagnet is thrown up as the ...

    Text Solution

    |

  9. The motion of copper plate is damped when it is allowed to oscillate b...

    Text Solution

    |

  10. A conducting loop is held above a current carrying wire PQ as shown in...

    Text Solution

    |

  11. Define the term self-inductance of a solenoid. Obtain the expression f...

    Text Solution

    |

  12. A varying current in a coil change from 10A to 0 in 0.5sec. If the ave...

    Text Solution

    |

  13. A rod of length l is moved horizontally with a uniform velocity v in a...

    Text Solution

    |

  14. How does one understand this motional emf by invoking the Lorentz forc...

    Text Solution

    |

  15. Describe, with the help of a suitable diagram, how one can demonstrate...

    Text Solution

    |

  16. Two loops, one rectangular of dimensions 10 cm xx 2.5 cm and second of...

    Text Solution

    |

  17. Two loops, one rectangular of dimensions 10 cm xx 2.5 cm and second of...

    Text Solution

    |

  18. Sketch the change in flux, emf and force when a conducting rod PQ of r...

    Text Solution

    |

  19. Define mutual inductance.

    Text Solution

    |

  20. A pair of adjacent coils has a mutual inductance of 1.5 H. If the curr...

    Text Solution

    |

  21. A long straight current carrying wire passes normally through the cent...

    Text Solution

    |