Home
Class 10
PHYSICS
When a current of 4.0A passes through a ...

When a current of 4.0A passes through a certain resistor for 10 minutes, `2.88 xx 10^(4)J` of heat are produced. Calculate:
(a) the power of the resistor.
(b) the voltage across the resistor.

Text Solution

Verified by Experts

The correct Answer is:
(a) 48 W (b) 12 V
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer Type Questions|1 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Short Answer Type Questions|2 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Sample Problem|1 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK|2 Videos

Similar Questions

Explore conceptually related problems

100 J of heat are produced each second in a 4 Omega resistance. Find the potential difference across the resistor.

Current flowing through 4 Omega resistor is :

A current of 2 mA is passed through a colour coded carbon resistor with first, second and third rings of yellow, green and orange colours. What is the voltage drop across the resistor?

A current of 2 mA is passed through a colour coded carbon resistor with first, second and third rings of yellow, green and orange colours. What is the voltage drop across the resistor ?

An electric current of 4.0A flows through a 12Omega resistor. What is the rate at which heat energy is produced in the resistor?

A current of 200mA flows through a 4k Omega resistor. What is the p.d. across the resistor?

When a current passes through a resistor, its temperature increases. Is it an adiabatic process?

A 1 -k Omega resistor is connected in series with a 10-mH inductor, a 30 V battery and an open switch. At time t= 0 , the switch is suddenly closed. a. What is the maximum current in this circuit and when does it occur? b. What are the voltage drops across the inductor and across the resistor 20 mu s after the switch is closed? c. On a single set of axes, sketch the voltage across the resistor and the voltage across the inductor as functions of time. Also, sketch a graph of the current in the circuit as s function of time.

A resistore with a current of 3 A through it converts 500 J or electrical energy to heat energy in 12 s. What is the voltage across the resistor ?

LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. Explain why, tungsten is used for making the filaments of electric bul...

    Text Solution

    |

  2. Explain why, the current that makes the heater element very hot, only ...

    Text Solution

    |

  3. When a current of 4.0A passes through a certain resistor for 10 minute...

    Text Solution

    |

  4. A heating coil has a resistance of 200 Omega. At what rate will heat b...

    Text Solution

    |

  5. An electric heater of resistance 8 Omega draws 15 A from the service m...

    Text Solution

    |

  6. A resistance of 25 Omega is connected to a 12V battery. Calculate the ...

    Text Solution

    |

  7. 100 J of heat are produced each second in a 4 Omega resistance. Find t...

    Text Solution

    |

  8. (a) Derive the expression for the heat produced due to a current 'I' f...

    Text Solution

    |

  9. The heat produced by passing an electric current through a fixed resis...

    Text Solution

    |

  10. The current passing through an electric kettle has been doubled. The h...

    Text Solution

    |

  11. What is an electric fuse? How does it function?

    Text Solution

    |

  12. The elements of electrical heating devices are usually made of:

    Text Solution

    |

  13. The heat produced in a wire of resistance 'x' when a current 'y' flows...

    Text Solution

    |

  14. Which of the following characteristic is not suitable for a fuse wire?

    Text Solution

    |

  15. In a filament type light bulb, most of the electric power consumed app...

    Text Solution

    |

  16. Which of the following is the most likely temperature of the filament ...

    Text Solution

    |

  17. If the current flowing through a fixed resistor is halved, the heat pr...

    Text Solution

    |

  18. The electrical resistivities of four materials P,Q,R and S are given b...

    Text Solution

    |

  19. (a) How does the wire in the filament of a light bulb behave different...

    Text Solution

    |

  20. Two exactly similar heating resistances are connected (i) in series, a...

    Text Solution

    |