Home
Class 12
PHYSICS
A conductuing loop having a capacitor is...

A conductuing loop having a capacitor is moving outward from the magnetic field. Which plate of the capacitor will be positive?

A

plate-`A`

B

plate-`B`

C

plate-`A` and plate -`B` both

D

none

Text Solution

Verified by Experts

The correct Answer is:
A

Cross (xx) linked with the loop are decreasing, so induced current in it is clockwise i.e., from `Brarr A`. Hence electrons flow plate `A` to `B` so plate `A` becomes positively charged.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Motional And Rotational Emf|95 Videos
  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Inductor Circuits|31 Videos
  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Section D - Chapter End Test|29 Videos
  • ELECTROMAGNETIC WAVES AND COMMUNICATION SYSTEM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The magnetic field between the plates of a capacitor when r gt R is given by-

A capacitor having capacity of 2 muF is charged to 200 V and then the plates of the capacitor are connected to a resistance wire. The heat produced in joule will be

A conducting loop having resistance R contains a capacitor of capacitance C. A uniform magnetic field B is applied perpendicular to the plane of the loop. The magnetic field is made to change with time as depicted in the graph [t_(0) = 2RC] . Plot the variation of charge on the capacitor as a function of time (t).

Two capacitors of capacitance 2 muF and 3 muF are joined in series. Outer plate first capacitor is at 1000 volt and outer plate of second capacitor is earthed (grounded). Now the potential on inner plate of each capacitor will be

Answer the following quesitons : (a) A closed conducting loop moves normal to the electric fieldd between the plates of a large capacitor. Is a current induced in the loop when it is (i) wholly inside the capacitor (ii) partially outside the plates of capacitor. Electric field is normal to the plane of the loop. (b) A rectangular loop and a circular loop are moving out of a uniform magnetic field region to a field free region with a constant velocity, Fig. In which loop do you expact the induced e.m.f. to be constant during the passage out of the field region, the field is normal to the loops ? (c ) Predict the polarity of the capacitor in the situation described by Fig.

A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved farther apart by means of insulating handles:

A2Z-ELECTROMAGNETIC INDUCTION-Section D - Chapter End Test
  1. A conductuing loop having a capacitor is moving outward from the magne...

    Text Solution

    |

  2. Two pure inductors each of self-inductance L are connected in parallel...

    Text Solution

    |

  3. A coil and a bulb are connected in series with a dc source, a soft iro...

    Text Solution

    |

  4. The current flowing in a coil of self-inductance 0.4 mH is increased b...

    Text Solution

    |

  5. 5 cm long solenoid having 10 ohm resistance and 5mH induced is joined ...

    Text Solution

    |

  6. A solenoid has an inductance of 60 henrys and a resistance of 30 ohms....

    Text Solution

    |

  7. In a circular conducting coil, when current increases from 2A to 18A i...

    Text Solution

    |

  8. Find out the e.m.f. produced when the current change from 0 to 1A in 1...

    Text Solution

    |

  9. A coil of 100 turns carries a current of 5mA and creates a magnetic fl...

    Text Solution

    |

  10. If the current 30A flowing in the primary coil is made zero in 0.1 sec...

    Text Solution

    |

  11. A square loop of side 5 cm enters a magnetic field with 1cms^(-1). The...

    Text Solution

    |

  12. A small coil is introduced between the poles of an electromagnet so th...

    Text Solution

    |

  13. Two circular coils A and B are facing each other as shown in figure. T...

    Text Solution

    |

  14. If in a coil rate of change of area is (5meter^(2))/(milli second)and ...

    Text Solution

    |

  15. Two coils P and Q are placed co-axially and carry current I and I' re...

    Text Solution

    |

  16. The phase difference between the flux linkage and the induced e.m.f. i...

    Text Solution

    |

  17. A hundred turns of insulated copper wire are wrapped around an iron cy...

    Text Solution

    |

  18. In circular coil, when no. of turns is doubled and resistance becomes ...

    Text Solution

    |

  19. In a transformer, number of turns in the primary coil are 140 and that...

    Text Solution

    |

  20. Two coil are placed close to each other. The mutual inductance of the ...

    Text Solution

    |

  21. When the current changes from +2A to -2A in 0.05 second, an e.m.f. of ...

    Text Solution

    |