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If the direction of electric current is ...

If the direction of electric current is reversed, then the direction of the magnetic field would also be reversed.

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Study the following principle and answer the question. A force is excreted on a current-carrying conductor placed in a magnetic field. The direction of this force depends on both the direction of the current and the direction of the magnetic field. This force is maximum when the direction of the current is perpendicular to the direction of the getic field. Draw a diagram representing the construction of this equipment.

Study the following principle and answer the question. A force is excreted on a current-carrying conductor placed in a magnetic field. The direction of this force depends on both the direction of the current and the direction of the magnetic field. This force is maximum when the direction of the current is perpendicular to the direction of the getic field. In which electrical equipment is this principle used?

PQ is a current carrying conductor in the plane of the paper as shown in the figure below. (i) Find the directions of the magnetic fields produced by it at points R and S? (ii) Given r_(1)gt r_(2) , where will the strength of the magnetic field be larger? Give reasons (iii) If the polarity of the battery connected to the wire is reversed, how would the direction of the magnetic field be changed? (iv) Explain the rule that is used to find the direction of the magnetic field for a straight current carrying conductor.

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TARGET PUBLICATION-EFFECTS OF ELECTRIC CURRENT -True or False.
  1. The unit of electrical power is watt.

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  2. The electric bulb consists of the filament whose melting point is low.

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  3. Resistivity of pure metals is more than alloys.

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  4. Short circuit occurs, when more appliances work together in a circuit.

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  5. During a short circuit, small amount of current flows through it.

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  6. Electric current, if very weak, does not produce magnetic field.

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  7. Moving charges in a magnetic field would experience a force.

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  8. Most of the power stations produce direct current.

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  9. The working of an electric generator is based on the heating effect of...

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  10. Heat produced in an electric circuit depends upon the potential differ...

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  11. The unit of electrical power is watt.

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  12. The electric bulb consists of the filament whose melting point is low.

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    |

  13. Resistivity of pure metals is more than alloys.

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  14. Metal castings of all electrical appliances must be earthed.

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  15. Short circuit occurs, when more appliances work together in a circuit.

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    |

  16. During a short circuit, small amount of current flows through it.

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    |

  17. Electric current, if very weak, does not produce magnetic field.

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    |

  18. If the direction of electric current is reversed, then the direction o...

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  19. Most of the power stations produce direct current.

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    |

  20. The working of an electric generator is based on the heating effect of...

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    |