Home
Class 12
PHYSICS
A bar magnet is pulled along axis of a c...

A bar magnet is pulled along axis of a coil with uniform velocity with south pole entering into the coil. The sketch of Joule's heat with time is represented by

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
`e=-(dphi)/(dt)`
`i=(e)/(R)` where R is resistance
`H=i^(2)Rt`
The emf will induce from zero to some maximum value and then from maximum to zero.
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    FIITJEE|Exercise PHYSICS|747 Videos

  • SIMPLE HARMONIC MOTION

    FIITJEE|Exercise Assignment Problems (Objective) (Level-II)|20 Videos

  • WORK, ENERGY AND POWER

    FIITJEE|Exercise COMPREHENSIONS ( Comprehension-II)|5 Videos

Similar Questions

Explore conceptually related problems

A short bar magnet is pulled rapidly through a conductind cooil along its axis with uniform velocity, with its north pole entering the coil first. Sketch vartition of (a) flux, (b) induced current and (c) power dissipated in coil with time.

Through a conducting coil along its axis, a short bar magnet is rapidly pulled with uniform velocity with, with its north pole entering the coil first. Plot the variation of (i) flux, (ii) induced current and (iii) power dissipated in coil with time.

A bar magnet was pulled away from a hollow coil A as shows in Fig As the south pole came out of the coil, the bar magnet next to hollow coil B experiened a magnetic force

A bar magnet is kept along the axis is coil with its N-pole facing the coil. The magnet is then rotated along its own axis. The induced current in the coil will we

A cylindrical bar magnet is kept along the axis of coil. Will there be a current induced in the coil. Will there be a current induced in the coil if the magnet is rotaded about its axis ? Give reasons.

A bar magnet is released from rest along the axis of a very long, vertical copper tube. After some time the magnet.

A cylindrical bar magnet is kept along the axis of a circular coil. If the magnent is rotated about its axis, then

A circular coil is lying on the horizontal floor and one bar magnet with its length vertical and along the axis of coil starts falling down towards the coil. What can you say about the direction of induced current in the coil?

FIITJEE-TEST PAPERS-PHYSICS
  1. An insulated cylinder contains nitrogen gas which is sealed on the top...

    Text Solution

    |

  2. Two vertical walls are separated by a distance of 2 metres. Wall 'A' i...

    Text Solution

    |

  3. A bar magnet is pulled along axis of a coil with uniform velocity with...

    Text Solution

    |

  4. A satellite is revolving round the earth at a height (R/2) from surfac...

    Text Solution

    |

  5. There are two concentric cylinders of radii R(1) and R(2) as shown. Th...

    Text Solution

    |

  6. A river of width d is flowing with a velocity u. A person starts from ...

    Text Solution

    |

  7. Velocity of efflux in torricelli's theorem is given by v=sqrt(2gh), he...

    Text Solution

    |

  8. A man moving on track ABC, getting rain drops vertical for the path AB...

    Text Solution

    |

  9. Two bodies A and B are at position (2, 3)m amd (5, 7)m respectively. T...

    Text Solution

    |

  10. A force F acts tangentially on a part of a uniform disc of mass 'm' an...

    Text Solution

    |

  11. If acceleration gradient of a moving body along positive x-axis is -4s...

    Text Solution

    |

  12. In the figure shown ABCD is a lamina of mass 12 kg. The moment of iner...

    Text Solution

    |

  13. For the arrangement as shown in the figure the maximum force F, for no...

    Text Solution

    |

  14. One mole of a monoatomic gas undergoes a linear process A rarr B in P ...

    Text Solution

    |

  15. Two coaxial solenoids having same number of turns per unit length n, a...

    Text Solution

    |

  16. A particle of mass m moves in a force field such that its potential en...

    Text Solution

    |

  17. find minimum value of F such that m(2) starts its motion on the ground

    Text Solution

    |

  18. Molecule of a gas in a container hits one wall (1) normally and reboun...

    Text Solution

    |

  19. A thermometer uses density of water as thermometric property. Actual r...

    Text Solution

    |

  20. A power supply of fixed emf E is connected to a variable resistor (res...

    Text Solution

    |