Home
Class 11
PHYSICS
P and Q are two circular thin coils of s...

P and Q are two circular thin coils of some radius and subjected to the same rate of change of flux. If coil P is made up of copper and Q is made up of iron , then the wrong statement is

A

emf induced in the coils is the same

B

the induced current in P is more than that in Q

C

the induced current in P and Q are in the same direction

D

the induced current are the same in both the coils

Text Solution

Verified by Experts

The correct Answer is:
D
Induced emf will be same but resistance of both loop will be different.
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY AND VISCOCITY

    RESONANCE ENGLISH|Exercise Advanced Level Problems|9 Videos

  • ELECTROSTATICS

    RESONANCE ENGLISH|Exercise Exercise|52 Videos

Similar Questions

Explore conceptually related problems

P and Q are two circular thin coils of same radius and subjected to the same rate of change of flux. If coil P is made up of copper and Q is made up of iron, Then the wrong statement is-

If the B-H curves of two samples of P and Q of iron are as shown below, then which one of the following statements is CORRECT?

A steady current is flowing in a circular coil of radius R, made up of a thin conducting wire. The magnetic field at the centre of the loop is B_L . Now, a circular loop of radius R//n is made from the same wire without changing its length, by unfounding and refolding the loop, and the same current is passed through it. If new magnetic field at the centre of the coil is B_C , then the ratio B_L//B_C is

A steady current is flowing in a circular coil of radius R, made up of a thin conducting wire. The magnetic field at the centre of the loop is B_L . Now, a circular loop of radius R//n is made from the same wire without changing its length, by unfounding and refolding the loop, and the same current is passed through it. If new magnetic field at the centre of the coil is B_C , then the ratio B_L//B_C is

Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the ratio of potentail difference applied across them so that the magnetic field at their centres is the same?

Spheres P and Q are uniformally constructed from the same material which is good conductor of heat and the radius of Q is thrice the radius of P . The rate of fall of temperature of P is x times that of Q when both are at the same surface temperture. Find the value of 'x' :

From an inclined palne two particles P,Q are projected with same speed at same angle theta ,one up and other down the plane as shown in figure.Which of the following statement(s) is/are correct ?

Two circular coils are made from a uniform copper wire. Radii of circular coils is in the ratio 3:4 and number of turns in the ratio 3:5. If they are connected in series across a battery. Statement (A) : Ratio between magnetic field inductions at their centers is 4 : 5 Statement (B) : Ratio between effective magnetic moments of the two coils is 16 : 15

There are two concentric circular loops. One loop of radius r is made up of only one turn. The other loop has a radius 2r and has two turns of wire. They are arranged such that they have a common centre and their planes are perpendicular to each other. When the same current i is passed through both the coils, the magnetic field at the common centre is

Two identical loops P and Q each of radius 5cm are lying in perpendicular planes such that they have a common centre as shown in the figure. Find the magnitude and direction of the net field at the common centre of the two coils, if they carry currents equal to 3A and 4A respectively.

RESONANCE ENGLISH-ELECTROMAGNETIC INDUCTION-Exercise
  1. A small square loop of wire of side l is placed inside a large square ...

    Text Solution

    |

  2. A metallic square loop ABCD is moving in its own plane with velocity v...

    Text Solution

    |

  3. P and Q are two circular thin coils of some radius and subjected to th...

    Text Solution

    |

  4. Three identical circular coils A, B and C are placed coaxial (with pla...

    Text Solution

    |

  5. Two plane circular coils P and Q have radii r(1) and r(2), respectivel...

    Text Solution

    |

  6. A conducting rod PQ of length l = 2m is moving at a speed of 2m s^(-1)...

    Text Solution

    |

  7. The horizontal component of earth's magnetic field is 3xx10^(-5) Wb//m...

    Text Solution

    |

  8. The north pole of a magnet is brought near a metallic ring as shown in...

    Text Solution

    |

  9. The unit of mutual inductance is-

    Text Solution

    |

  10. In a step-down transformer input voltage is 200 volts and output volta...

    Text Solution

    |

  11. Lenz's law is due to conservation of

    Text Solution

    |

  12. On passing a current of 2A in a coil inductance 5H, the energy stored ...

    Text Solution

    |

  13. A metal rod of length L is placed normal to a magnetic field and rotat...

    Text Solution

    |

  14. The spokes of a wheel are made of metal and their lengths are of one m...

    Text Solution

    |

  15. When the primary current in the spark-coil of a car changes from 4A to...

    Text Solution

    |

  16. The self-inductance of a coil is 2H. The current in the coil changes f...

    Text Solution

    |

  17. Area of a coil is 0.16m^2. If the magnetic field through it changes fr...

    Text Solution

    |

  18. What will increase in step-down transformer?

    Text Solution

    |

  19. If in a coil rate of change of area is 5 m^(2) / milli second and cur...

    Text Solution

    |

  20. An electron beam is moving near to a conducting loop then the induced...

    Text Solution

    |