Home
Class 10
PHYSICS
When a 12 V battery is connected across ...

When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of resistor?

Promotional Banner

Topper's Solved these Questions

  • LIGHT:REFLECTION AND REFRACTION

    MBD|Exercise EXAMPLE|150 Videos

Similar Questions

Explore conceptually related problems

A battery of emf 10 V and internal resistance 3 Omega is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?

A battery of e.m.f. 10V and internal resistance 3 Omega is connected to a resistor. If the current in the circuit is 0.5 A, What is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?

A battery of e.m.f. 12 V and internal resistance 5Omega is connected to a resistor. If the current through the circuit is 0.3 A, what is the resistance of the resistor? What is the terminal voltage of the battery, when the circuit is closed?

In an experimenal to study the dependance of current on potential difference across a resistor, a student obtained graph s shown below: Calculate the value of resistance of the resistor.

MBD-ELECTRICITY-EXAMPLE
  1. Two conducting wires of the same material and of equal length and equa...

    Text Solution

    |

  2. How is a voltmeter connected in the circuit to measure potential diffe...

    Text Solution

    |

  3. When a 12 V battery is connected across an unknown resistor, there is ...

    Text Solution

    |

  4. A battery 9 V is connected in series with resistors of 0.2Omega ,0.3Om...

    Text Solution

    |

  5. How many 176 Omega resistors in parallel are required to carry 5A on a...

    Text Solution

    |

  6. How will you connect three resistors, each of resistance 6 Omega, so t...

    Text Solution

    |

  7. Several electric bulbs designed to be used on a 220 V electric supply ...

    Text Solution

    |

  8. A hot plate of an electric oven connected to a 220 V line has two resi...

    Text Solution

    |

  9. Compare the power used in 2 Omega resistor in each of the following ci...

    Text Solution

    |

  10. Two lamps, one rated 100 W at 220 V and other 60 W at 220 V, are conn...

    Text Solution

    |

  11. Which uses more energy, a 250 W TV set for 1 hour or a 1,200 W toaster...

    Text Solution

    |

  12. An electric heater of resistance 8Omega draws 15 A from service mains ...

    Text Solution

    |

  13. Explain the following : Why is the tungsten used almost exclusively fo...

    Text Solution

    |

  14. Explain the following:Why are the conductors of electric heating devic...

    Text Solution

    |

  15. Explain the following : Why is the series arrangement not used in dome...

    Text Solution

    |

  16. Explain the following:How does the resistance of a wire vary with its ...

    Text Solution

    |

  17. Explain the following : Why are copper and aluminium usually employed ...

    Text Solution

    |

  18. What is meant by Joule's heating effect due to flow of current through...

    Text Solution

    |

  19. Define electric power and unit of electric power

    Text Solution

    |

  20. What do you mean by electric energy ? Give the definition of its unit.

    Text Solution

    |