Home
Class 12
PHYSICS
When the current through a solenoid incr...

When the current through a solenoid increases at a constant rate, the induced current in the solenoid

A

is a constant and is in the direction of the inducing current

B

is a constant and is opposite to the direction of the inducing current

C

increase with time and is in the direction of inducing current

D

increase with time and is opposite to the direction of inducing current

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Taking it together|119 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Medical entrance special format questions|17 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Example|71 Videos

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|97 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY ENGLISH|Exercise Sec C|22 Videos

Similar Questions

Explore conceptually related problems

A technician wraps wire around a tube of length 4pi^2 cm having a diameter of 8.00cm. When the windings are evenly spread over the full length of the tube, the result is a solenoid containing 1000turns of wire. If the current in this solonoid increases at the rate of 4.00A/s the self-induced emf in the solenoid is

A technician wraps wire around a tube of length 4pi^2 cm having a diameter of 8.00cm. When the windings are evenly spread over the full length of the tube, the result is a solenoid containing 1000turns of wire. If the current in this solonoid increases at the rate of 4.00A/s. the inductance of this solenoid is

A long solenoid having 200 turns per centimeter carries a current of 1.5 A . At the center of the solenoid is placed a coil of 100 turns of cross-sectional area 3.14 xx 10^(-4) m^(2) having its axis parallel to the field produced by the solenoid. When the direction of current in teh solenoid is reversed within 0.05 s , the induced emf in the coil is

A long solenoid having n = 200 turns per metre has a circular cross-section of radius a_(1) = 1 cm . A circular conducting loop of radius a_(2) = 4 cm and resistance R = 5 (Omega) encircles the solenoid such that the centre of circular loop coincides with the midpoint of the axial line of the solenoid and they have the same axis as shown in Fig. A current 't' in the solenoid results in magnetic field along its axis with magnitude B = (mu)ni at points well inside the solenoid on its axis. We can neglect the insignificant field outside the solenoid. This results in a magnetic flux (phi)_(B) through the circular loop. If the current in the winding of solenoid is changed, it will also change the magnetic field B = (mu)_(0)ni and hence also the magnetic flux through the circular loop. Obvisouly, it will result in an induced emf or induced electric field in the circular loop and an induced current will appear in the loop. Let current in the winding of solenoid be reduced at a rate of 75 A //sec . When the current in the solenoid becomes zero so that external magnetic field for the loop stops changing, current in the loop will follow a differenctial equation given by [You may use an approximation that field at all points in the area of loop is the same as at the centre

A tightly- wound, long solenoid is kept with its axis parallel to a large metal sheet carrying a surface current. The surgace current through a width dl of the sheet is Kdl and the number of turns per unit length of the solenoid is n. The magnetic field near the centre of the solenoid is found to be zero. (a) find the current in the solenoid. (b) If the solenoid is rotated to make its axis perpendicular to the metal sheet, what would be the magnitude of the magnetic field near its centre?

A conducting wire frame is placed in a magnetic field which is directed into the paper. The magnetic field is increasing at a constant rate. The direction of induced current in wire AB and CD are

A small, conducting circular loop is placed inside a long solenoid carrying a current. The plane of the loop contains the axis of the solenoid. If the current in the solenoid is varied, the current induced in the loop is

A small, conducting circular loop is placed inside a long solenoid carrying a current. The plane of the loop contains the axis of the solenoid. If the current in the solenoid is varied, the current induced in the loop is

A long solenoid of radius 2R contains another coaxial solenoid of radius R . The coils have the same number of turns per unit length and initially both carry zero current. At time, t=0 , current start increasing linearly with time in both solenoids. At any moment the current flowing in the inner coil is twice as large as that in the outer one and their directions are same. A charged particle, initially at rest between the two solenoids, start moving along a circular trajectory due to increasing current in the solenoid as shown in the figure What is the radius of the circle ? (Assume magnetic field due to each solenoid remains uniform over its cross-section.)

Statement1: The magnetic filed at the ends of very long current carrying solenoid is half of that at the centre. Statement2: If the solenoid is sufficiently long, the field within it is uniform.

DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Check point
  1. A coil having an area A(0) is placed in a magnetic field which changes...

    Text Solution

    |

  2. The magnetic flux phi (in weber ) in a closed circuit of resistance 10...

    Text Solution

    |

  3. When the current through a solenoid increases at a constant rate, the ...

    Text Solution

    |

  4. The magnetic flux across a loop of resistance 10Omega is given by phi=...

    Text Solution

    |

  5. A circular ring of diameter 20cm has a resistance 0.01Omega How much c...

    Text Solution

    |

  6. Magnetic flux in a circuite containing a coil of resistance 2Omegachan...

    Text Solution

    |

  7. The direction of induced e.m.f. during electromagnetic induction is gi...

    Text Solution

    |

  8. Two different wire loops are concentric and lie in the same plane. The...

    Text Solution

    |

  9. Lenz's law is consequence of the law of conservation of

    Text Solution

    |

  10. The north pole of a long horizontal bar magnet is being brought closer...

    Text Solution

    |

  11. There is a uniform magnetic field directed perpendicular and into the ...

    Text Solution

    |

  12. A conducing rod of length l is falling with a velocity v perpendicular...

    Text Solution

    |

  13. A wire of length 50 cm moves with a velocity of 300 m/min, perpendicul...

    Text Solution

    |

  14. A 10 m wire kept in east-west direction is falling with velocity 5 m/s...

    Text Solution

    |

  15. A boat is moving due east in a region where the earth's magnetic field...

    Text Solution

    |

  16. The magnitude of the earth's magnetic field at a place is B(0) and an...

    Text Solution

    |

  17. A conducing circular loop is placed in a uniform magnetic field of ind...

    Text Solution

    |

  18. The current flowing in two coaxial coils in the same direction. On inc...

    Text Solution

    |

  19. A circular coil of mean radius of 7 cm and having 4000 turns Is rotate...

    Text Solution

    |

  20. A coil of N turns and mean cross-sectional area A is rotating with uni...

    Text Solution

    |