Home
Class 12
PHYSICS
A long solenoid with 15 turns per cm has...

A long solenoid with 15 turns per cm has small loop of area `2.0 cm^(2)` placed inside, normal to the axis of the soleniod. If current carried by the solenoid changes steadily from 2 A to 4 A in 0.1 s, what is the induced voltage in the loop, while the current is changing ?

Text Solution

Verified by Experts

The correct Answer is:
`7.5xx10^(-6) V`
Promotional Banner

Topper's Solved these Questions

  • ELECTRICAL INSTRUMENTS

    SL ARORA|Exercise Problem for self practice|81 Videos

  • ELECTROMAGNETIC WAVES

    SL ARORA|Exercise Problem for self-practice|21 Videos

Similar Questions

Explore conceptually related problems

A long solenoid with 10 turns per cm has a small loop of area 3cm^(2) placed inside, normal to the axis of the solenoid. If the currnet carried by the solenoid changes steadily from 2 A to 4 A in 0.2 s, what is the induced voltage in the loop, while the current is changing?

Along solenoid with 50 turns per cm has a small loop of area 4.0 cm^(2) placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from 1.0 A to 2.0 A in 0.1 s, what is the induced voltage in the loop while the current is changing?

A long solenoid with 1.5 turns per cm has a small loop of area 2.0 cm^(2) placed inside the solenoid normal to its axis. If the current in the solenoid changes steadily from 2.0 A to 4.0 A in 1.0 s . The emf induced in the loop is

A long solenoid of 10 turns / cm has a small loop of area 1 sq. cm placed inside with the normal of the loop parallel to the axis. Calculate the placed across the small loop if the current in the solenoid is changed from 1 A to 2 A in 0 .1 s, during the duration of this change.

A long solenoid of diameter 0.1 m has 2 xx 10^(4) turns per meter. At centre of the solenoid is 100 turns coil of radius 0.01 m placed with its axis coinciding with solenoid axis. The current in the solenoid is decreased at a constant rate form + 2 A to - 2 A in 0.05 s. Find the e.m.f. induced in the coil. Also, find the total charge flowing through the coil during this time, when the resistance of the coil is 10 pi^(2) ohm .

A current l = 1.5 A is flowing through a long solenoid of diameter 3.2 cm, having 220 turns per cm. At its centre, a 130 turn closely packed coil of diameter 2.1 cm is placed such that the coil is coaxial with the long solenoid. The current in the solenoid is reduced to zero at a steady rate in 25 ms. What is the magnitude of emf induced in the coil while the current in the solenoid is changing?

Through a long solenoid of diameter 4.1 cm, having 100 turns per cm, a current I = 1A is flowing. At its centre, a 60 turns closely packed coil of diameter 3.1 cm si placed such that the coil is coaxial with the long solenoid. The current in the solenoid is reduced to zero at a steady rate in 10 ms. What is the magnitude of emf induced in the coil while the current in the solenoid is changing?

(a) Calculate the self-inductance of a solenoid that is tightly wound with wire of diameter 0.10 cm , has a cross-sectional area 0.90 cm^2 and is 40 cm long (b) If the current through the solenoid decreases uniformly from 10 A to 0 A in 0.10 s , what is the emf induced between the ends of the solenoid?

SL ARORA-ELECTROMAGNETIC INDUCTION-All Questions
  1. A metal disc of radius 200 cm is rotated at a constant angular speed o...

    Text Solution

    |

  2. A gramophone disc of brass of diameter 30 cm rotates horizontally at t...

    Text Solution

    |

  3. A long solenoid with 15 turns per cm has small loop of area 2.0 cm^(2)...

    Text Solution

    |

  4. An air-cored solenoid of length 50cm and area of cross-sectional 28 cm...

    Text Solution

    |

  5. A closed coil consists of 500 turns has area 4 cm^2 and a resistance o...

    Text Solution

    |

  6. A jet plane is moving at a speed of 1000 km h^(-1). What is the potent...

    Text Solution

    |

  7. A straight conductor of length 0.4 m is moved with a speed of 7 m/s pe...

    Text Solution

    |

  8. A horizontal telephone wire 1 km long is lying along east-west in eart...

    Text Solution

    |

  9. A horizontal wire 24 cm long falls in the field of flux density 0.8 T...

    Text Solution

    |

  10. A straight rod 2m long is placed in an aeroplane in the east-west dire...

    Text Solution

    |

  11. Shows a square loop having 100 turns, an area of 2.5 xx10^(-3) m^2 an...

    Text Solution

    |

  12. A rod closing the circuit shown in Fig moves along a U shaped wire at ...

    Text Solution

    |

  13. Fig. 12.32 shows a long, rectangular, conducting loop of with l, mass ...

    Text Solution

    |

  14. A coil has 50 turns and its area is 500 cm^(2). It is rotating at the ...

    Text Solution

    |

  15. Calculate the maximum emf induced in a coil of 100 turns and 0.01 m^(2...

    Text Solution

    |

  16. A magnetic flux of 8xx10^(-4) weber is linked with each turn of a 200 ...

    Text Solution

    |

  17. Calculate the induced emf in a coil of 10 H inductance in which the cu...

    Text Solution

    |

  18. Calculate the self- inductance of a coil when a change of current from...

    Text Solution

    |

  19. An average emf of 25 V is induced in an inductor when the current in i...

    Text Solution

    |

  20. A coil has a self inductance of 10 mH. What is the maximum magnitude o...

    Text Solution

    |