Home
Class 12
PHYSICS
Two coils have amutual inductance 0.005 ...

Two coils have amutual inductance 0.005 H. The current changes in the first coil according to the equation` I= i_m sin omega t` , where `i_m = 10 A and w= 100 pi rad s^(-1)`. The maximum value of the emf induced in the second coil is:

A

`pi`

B

`2pi`

C

`4pi`

D

`5pi`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPER 4

    SARAS PUBLICATION|Exercise EXERCISE|42 Videos

  • MODEL QUESTION PAPER 6

    SARAS PUBLICATION|Exercise EXERCISE|45 Videos

Similar Questions

Explore conceptually related problems

A conducting loop of area 5.0 cm^2 is placed in a magnetic field which varies sinusoidally with time as B = B_0 sin omegat where B_0 = 0.20 T and omega = 300 s^(-1) . The normal to the coil makes an angle of 60^@ with the field. Find (a) the maximum emf induced in the coil, (b) the emf induced at t = (pi/900)s and (c) the emf induced at t = (pi/600)s .

A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0 to 20 A in 0.5 s, what is the change of flux linkage with the other coil?

Shows a square frame of wire having a total resistance r placed coplanarly with a long, straight wire. The wire carries a current I given by i= i_0 sin omega t . Find(a) the flux of the magnetic field through the square frame, (b) the emf induced in the frame and (c) the heat developd in the frame in the time interval 0 to (20pi)/(omega) .

A particle having mass 10 g oscillates according to the equation x=(2.0cm) sin[(100s^-1)t+pi/6] . Find the amplitude the time period and the spring constant

A circular coil of rauis 10cm, 500 turns and resistance 2Omega is placed with its plane perpendicualr to the horizontal component of the earth's magnetic field it is rotated about its vertical diameter through 180^(@) in 0.25 S estimate the magnitude of the emf and current induced in the coil. Horizontal component of earth's magnetic field at the place is 3xx10^(-5)T.

Two coil A and B have inductances 1.0 H and 2.0 H respectively. The resistance of each coil is 10 Omega . Each coil is connected to an ideal battery of emf 2.0 V at t = 0 Let i_A and i_B be the current in the two circuit at time t. Find the raito i_A/ I_B at (a) t=100ms, (b) t= 200 ms and (c ) t = 1 s.

A 100 turn closely wound circular coil of radius 10 cm carries a current of 3.2 A. a. What is the field at the centre of the coil ? b. What is the magnetic moment of this coil ? The coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A unifrom magnetic field of 2 T in the horizontal direction exists such that initially the axis of the coil is in the direction of the field. The coil rotates through an angle of 90^@ under the influence of the magnetic field . c. What are the magnitudes of the torques on the coil in the initial and final position ? d. What is the angular speed acqired by the coil when it has rotated by 90^(@) ? The moment of inertia of the coil is 0.1 kg m^2

A circular coil of raduis 10cm, 500 turns and resistance 200Omega is placed with its plane perpendicular to the horizontal component of earth's magnetic field. If is rotated about its vertical diameter through 180^(@) in 0.25s. Estimate the magnitudes of the emf and current induced in the coil. (B_(H)=3xx10^(-5)T)

SARAS PUBLICATION-MODEL QUESTION PAPER 5-EXERCISE
  1. Four identical cells of emf e and internal resistance r are to be conn...

    Text Solution

    |

  2. A parallel plate capacitor is charged and then isolated. The effect of...

    Text Solution

    |

  3. A spherical shell, of radius 10 cm is carrying a charge g. If the elec...

    Text Solution

    |

  4. Three point charges 3nC, 6nC and 9nC are placed at the corners of an e...

    Text Solution

    |

  5. In the circuit shown below, the ammeter and the voltmeter readings are...

    Text Solution

    |

  6. Two cells of emf E1 and E2 are joined in opposition (such that E1>E2)....

    Text Solution

    |

  7. If the velocity of light in a medium is 2.25 xx 10^(8) ms^(-1) then th...

    Text Solution

    |

  8. Two concentric coils each of radius equal to 2pi cm are placed at righ...

    Text Solution

    |

  9. The resistance of a bulb filament is 100 Omega at a temperature of 100...

    Text Solution

    |

  10. In Wheatstone network, P=2Omega,Q=2 Omega,R=2Omega and S = 3 Omega. Th...

    Text Solution

    |

  11. Core of electro magnets are made of ferromagnetic material which has:

    Text Solution

    |

  12. If there is no torsion in the suspension thread, then the time period ...

    Text Solution

    |

  13. Two parallel wires 1 m apart carry currents of 1A and 3 A respectively...

    Text Solution

    |

  14. A galvanometer of resistance 50 Omega gives a full scale deflection fo...

    Text Solution

    |

  15. A cyclotron is used to accelerate:

    Text Solution

    |

  16. A transformer is used to light a 100W and 110V lamp from 220V mains. I...

    Text Solution

    |

  17. In an LCR series circuit, at resonance

    Text Solution

    |

  18. An aircraft with a wingspan of 40 m flies with a speed of 1080 km//h i...

    Text Solution

    |

  19. Two coils have amutual inductance 0.005 H. The current changes in the ...

    Text Solution

    |

  20. The magnetic susceptibility of a paramagnetic material at -73 ^@ C is ...

    Text Solution

    |