Home
Class 10
PHYSICS
A compass needle is placed near a curre...

A compass needle is placed near a current - carrying straight wire . State your observation when the current in the wire is increased . Give reason .

Text Solution

Verified by Experts

The deflection of the compass needle increases .
Reason : Magnetic field strenght produced near a current - carrying straight wire is directly proportional to the current .
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    KUMAR PRAKASHAN|Exercise VALUE BASED QUESTIONS WITH ANSWERS|15 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    KUMAR PRAKASHAN|Exercise CHOOSE THE CORRECT OPTION FROM THOSE GIVEN BELOW EACH QUESTIONS:|54 Videos

  • ELECTRICITY

    KUMAR PRAKASHAN|Exercise PRACTICAL SKILL BASED QUESTION WITH ANSWERS|20 Videos

  • MODEL QUESTION PAPER 01

    KUMAR PRAKASHAN|Exercise SECTION-C|4 Videos

Similar Questions

Explore conceptually related problems

A compass needle is placed near a current - carrying straight wire . State your observation for the following case and give reason for the same in each case : (1) Direction of electric current in the wire is increased . (2) Magnitude of electric current in the wire is increased . (3) Teh compass needle is displaced away from the straight wire .

Define Ampere from two current carrying parallel wires.

Assertion: Electric field inside a current carrying wire is zero. Reason: Net charge on the current carrying wire is non zero.

Show arrangement of iron ore sprinkled around current carrying wire.

As we move away from a current -carrying straight wire , the magnetic field of wire varies as……..(Where, r is the distance between a given point and the wire ).

Heat produced in a current carrying conducting wire depends on current I, resistance R of the wire and time t for which current is passed. Using these facts, obtain the formula for heat energy

Magnetic field at 10 cm from extremely long current carrying straight wire is 10^(-5)Wb//m^(2) . Then current passing through this wire is ______ .

Write formula for current carrying wire placed in uniform magnetic field.

To find the direction of the magnetic field produced by a current -carrying wire, a magnetic needle is placed at different positions as shown in the following figure . Which position of the magnetic needle corresponds to the correct direction of the magnetic field ?

How is a current - carrying wire placed in a magnetic field so that a magnetic field does not act on it ?

KUMAR PRAKASHAN-MAGNETIC EFFECTS OF ELECTRIC CURRENT -ANSWER THE FOLLOWING QUESTIONS IN VERY SHORT AS DIRECTED (MISCELLANEOUS):
  1. PQ is a current - carrying long straight conductor in the plane of ...

    Text Solution

    |

  2. In the experiment to show that a current - carrying condcutor (rod) ...

    Text Solution

    |

  3. A compass needle is placed near a current - carrying straight wire ....

    Text Solution

    |

  4. The magnetic field lines of two bar magnets A and B are shown belo...

    Text Solution

    |

  5. Name any two source of direct current .

    Text Solution

    |

  6. Name the device used to prevent damage to the electrical appliance ...

    Text Solution

    |

  7. State value of potential difference between the live wire and neut...

    Text Solution

    |

  8. State one difference between the wires used in the element of an ele...

    Text Solution

    |

  9. In a domestic electric ciruit -wiring , with which wire do we con...

    Text Solution

    |

  10. Mention two ways to increases the strength of the magnetic field of ...

    Text Solution

    |

  11. Give the significance of the electric meter in a domestic circuit.

    Text Solution

    |

  12. A domestic circuit has a line of 5A ratting. How many lamps of ratt...

    Text Solution

    |

  13. Give any two uses of an electromagnet .

    Text Solution

    |

  14. A constant current I flows in a horizontal wire in the plane of paper...

    Text Solution

    |

  15. How do you magnetisea piece of magnetic material ?

    Text Solution

    |

  16. How does the current in a domestic circuit differ from that used to...

    Text Solution

    |

  17. State what would happen to the direction of rotation of the cell curr...

    Text Solution

    |

  18. State the use of Maxwell.s corckscrew rule .

    Text Solution

    |

  19. What type of dynamo (a machine for changing other power into electric...

    Text Solution

    |

  20. Give one reason for not using a series arrangement for domestic circ...

    Text Solution

    |