Home
Class 12
PHYSICS
A 0.1 m long conductor carrying a curren...

A `0.1 m` long conductor carrying a current of `50 A` is perpendicular to a magentic field of `1.25 mT`. The mechanical power to move the conductor with a speed of `1ms^(-1)` is

A

0.25 mW

B

6.25 mW

C

0.625 mW

D

1 W

Text Solution

Verified by Experts

The correct Answer is:
B
`P=Fv=Bilv=1.25xx10^(-3)xx50xx0.1xx1W`
`6.25xx10^(-3)W =6.25mW`
An iterating alternating P=EI=(Blv)I
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise ASSERTION & REASON|6 Videos

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise EXERCISE-3|24 Videos

  • ELECTRO MAGNETIC WAVES

    NARAYNA|Exercise LEVEL-II(H.W)|14 Videos

  • ELECTROMAGNETIC WAVES

    NARAYNA|Exercise EXERCISE -4|15 Videos

Similar Questions

Explore conceptually related problems

A conductor of length 1m and carrying current of 1A is placed parallel to the magnetic field of 1 gauss .The magnetic force acting on the conductor is: ?

A conductor of length 1m and carrying current of 1A is placed at an angle 45^@ to the magnetic field of 1 oersted. The force acting on the conductor is

A straight wire 50cm long carries a current of 5A . It is placed at right angle to a uniform magnetic field of 1T . Find the mechanical force on the wire and the power required to move it at 10ms^-1 in a plane at right angles to the magnetic field.

A straight wire of 1.4 m long carries a current of 7 A at right angles to a uniform magnetic field of 0.01 T. Calculate the mechanical force acting on the wire due to the magnetic field.

A conductor PQ, carrying a current i is placed perpendicular to a long conductor xy carrying a current i. The direction of force on PQ will be

A rectangular coil of 50 turns, each of area 0.1 m^(2) and carrying a current of 1 A is held perpendicular to a magnetic field of 0.1 T. What is the torque acting on the coil?

Find the force on the conductor carrying current I_1 as shown in figure.

A straight conductor of length 0.4 m is moved with a speed of 7 m/s perpendicular to the magnetic field of intensity of 0.9 Wb//m^(2) . The induced e.m.f. across the conductor will be

An infinite long straight conductor XY is carrying a current of 10A . An electron is moving with a speed of 10^5m^-1 parallel to the conductor in air from point A to B, as shown in figure. The perpendicular distance between the electron and the conductor XY is 20cm . Calculate the magnitude of the force experienced by the electron. Write the direction of this force.

NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-4
  1. A square of side L meters lies in the x-y plane in a region, where the...

    Text Solution

    |

  2. A loop made of straight edegs has six corners at A(0,0,0), B(L, O,0) C...

    Text Solution

    |

  3. The self inductance L of a solenoid of length l and area of cross-sect...

    Text Solution

    |

  4. A 0.1 m long conductor carrying a current of 50 A is perpendicular to ...

    Text Solution

    |

  5. A wheel has three spokes and is an uniform magnetic field perpendicula...

    Text Solution

    |

  6. Find the linear speed the bicycle required to power its head light by...

    Text Solution

    |

  7. A conducting loop of radius R is present in a uniform magnetic field B...

    Text Solution

    |

  8. A magnetic field induction is changing in magnitude in a region at a c...

    Text Solution

    |

  9. A magnetic flux through a stationary loop with a resistance R varies d...

    Text Solution

    |

  10. The length of a wire required to manufacture a solenoid of length l an...

    Text Solution

    |

  11. The inductance L of a solenoid of length l, whose windings are made of...

    Text Solution

    |

  12. A circular wire loop of radius R is placed in the x-y plane centered a...

    Text Solution

    |

  13. An equilateral triangular loop ADC having some resistance is pulled wi...

    Text Solution

    |

  14. The current through the coil in figure (i) varies as shown in figure (...

    Text Solution

    |

  15. Two infinitely long conducting parallel rails are connected through a ...

    Text Solution

    |

  16. A flexible conducting wire in the form of a circle is kept in a unifor...

    Text Solution

    |