Home
Class 10
PHYSICS
You are given two coils A and B. Through...

You are given two coils A and B. Through each coil, the initial magnetic flux is same. In which coil, the em.f. induced will be more if the number of turns in the coil A is twice that of the coil B and the magnetic flux is reduced to zero in coil A, two times faster than in coil B?

Text Solution

Verified by Experts

e.m.f. induced is directly proportional to the number of turns in coil, but inversely proportional to the time of change of a given flux. Hence the e.m.f. induced is more in coil A than in B.
Promotional Banner

Topper's Solved these Questions

  • SPECIMEN PAPER (SOLVED)

    ICSE|Exercise SECTION II|78 Videos

  • SOUND

    ICSE|Exercise DIAGRAM BASED MCQ: |3 Videos

  • SPECIMEN QUESTION PAPER

    ICSE|Exercise QUESTIONS|33 Videos

Similar Questions

Explore conceptually related problems

The magnetic flux linked with a coil is phi and the emf induced in it is e .

When equal current is passed through two coils equal magnetic field is produced at their centers. If the ratio of number of turns in the coils is 8:15 then the ratio of the their radii will be

Whenever the magnet flux linked with a coil changes, then is an induced emf in the circuit. This emf lasts

Find the emf induced in the coil shown in figure.The magnetic field is perpendicular to the plane of the coil and is constant.

The self inductance of a coil is L . Keeping the length and area same, the number of turns in the coil is increased to four times. The self inductance of the coil will now be

The magnetic flux linked with a coil (in Wb) is given by the equation phi = 5t^2 + 3t +16 . The magnetic of induced emf in the coil at fourth second will be

Magnetic flux of 5 microweber is linked with a coil, when a current of 1mA flows through it. What is the self-inductance of the coil?

A moving coil galvanometer has N numbr of turns in a coil of effective area A , it carries a current I . The magnetic field B is radial. The torque acting on the coil is

A coil is rotated in a uniform magnetic field about an axis perpendicular to the field. The emf induced in the coil would be maximum when the plane of coil is :

The magnetic flux linked with a coil, in weber, is given by the equation: ϕ=5t^2+3t+16. The induced e.m.f. in the coil in the fourth second will be

ICSE-SPECIMEN PAPER (SOLVED)-SECTION II
  1. What energy change takes place in a dc motor ? On what principle does ...

    Text Solution

    |

  2. Name the phenomenon on which an a.c. dynamo works.

    Text Solution

    |

  3. You are given two coils A and B. Through each coil, the initial magnet...

    Text Solution

    |

  4. Name the device you will use to obtain 220 V a.c. from 11 V a.c. Draw ...

    Text Solution

    |

  5. 200 g of water at 50.5^@C is cooled down to 10^@C by adding m g of ice...

    Text Solution

    |

  6. Define the following terms: (i) calorie, (ii) heat capacity, (iii) spe...

    Text Solution

    |

  7. Write the approximate specific heat capacity of copper in S.I. unit.

    Text Solution

    |

  8. A certain mass of ice at 0^@C is converted to steam at 100^@C by const...

    Text Solution

    |

  9. Calculate the equivalent energy in MeV of a unified atomic mass unit.

    Text Solution

    |

  10. Name one radio isotope and state its use.

    Text Solution

    |

  11. A nucleus Pu emits an alpha particle and changes to U which emits a be...

    Text Solution

    |

  12. State one safety precaution for each of the following: in handling a...

    Text Solution

    |

  13. State one safety precaution for each of the following: in establishm...

    Text Solution

    |

  14. State one safety precaution for each of the following: in safe dispo...

    Text Solution

    |

  15. The diagram alongside shows a uniform metre rule of weight 100 gf bein...

    Text Solution

    |

  16. The diagram alongside shows a uniform metre rule of weight 100 gf bein...

    Text Solution

    |

  17. The diagram alongside shows a uniform metre rule of weight 100 gf bein...

    Text Solution

    |

  18. A pulley system with a velocity ratio 4 is used to lift a load of 300 ...

    Text Solution

    |

  19. A pulley system with a velocity ratio 4 is used to lift a load of 300 ...

    Text Solution

    |

  20. State two differences between energy and power.

    Text Solution

    |