Home
Class 12
PHYSICS
A battery of emf 2V and internal resista...

A battery of emf 2V and internal resistance `0.5(Omega)`is connected across a resistance 9.5(Ω). Find the current flow through battery ?

Text Solution

Verified by Experts

The current in the circuit is
`i=(2V)/(9.5(Omega)+0.5(Omega))=0.2A`.
Thus, a net transfer of 0.2C per second takes place across any cross section in the circuit. The number of elecrrons crossing the section in 1 second is, therefore,
`(2.0C)/(1.6xx10^(-19)C)=0.125xx10^(19)=1.25xx10^(18).`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CURRENT IN CONDUCTORS

    HC VERMA|Exercise questions for short answer|17 Videos
  • ELECTRIC CURRENT IN CONDUCTORS

    HC VERMA|Exercise Objective 1|16 Videos
  • ELECTRIC CURRENT IN CONDUCTORS

    HC VERMA|Exercise Exercises|84 Videos
  • DISPERSION AND SPECTRA

    HC VERMA|Exercise Exercises|11 Videos
  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Exercise|23 Videos

Similar Questions

Explore conceptually related problems

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

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

The potential difference between the terminals of a battery of emf 6.0V and internal resistance 1 (Omega) drops to 5.8 V when connected across an external resistor. Find the resistance of the external resistor.

A cell of emf 2V and internal resistance 0.1 Omega is connected with a resistance of 3.9Omega . The voltage across the cell terminals will be

A battery of emf 2.0 V and internal resistance 0.50(Omega) supplies a current of 100 mA. Find (a) the potential defference across the terminals of the battary and (b) the thermal energy develop in the battery in 10 s.

Six lead acid secondaryt celle each ofemf 2Vand-internal resistanee 0.015 Omega joined in series to provide a supply to a resistance of 8.5 Omega . Find the current drawn from the battery and its terminal voltage.

The potential difference across the terminals of a battery of emf 12 V and internal resistance 2 Omega drops to 10 V when it is connected to a silver voltameter. Find the silver deposited at the cathode in half an hour. Atomic weight of silver is 107.9 g mol^(-1) .

A capacitor of capacitance 12(mu)F is connected to a battery of emf 6.00V and internal resistance 1.00(Omega) through resistanceless leads. 12.0(mu)s after the connections are made, what will be (a) the current in the circuit, (b)the power delivered by the battery ,(c)the power dissipated in heat and (d)the rate at which the energy stored in the capacitor is increasing.

A battery of emf 2.0 volts and internal resistance 0.10(Omega) is being charged with a current of 5.0A. What is the potential difference between the terminals of the battery?

HC VERMA-ELECTRIC CURRENT IN CONDUCTORS-worked out Example
  1. A parallel-plate capacitor has plates of area 10cm^(2) separated by a ...

    Text Solution

    |

  2. Find the resistance of a hollow cylindrical conductor of length 1.0m a...

    Text Solution

    |

  3. A battery of emf 2V and internal resistance 0.5(Omega)is connected acr...

    Text Solution

    |

  4. A battery of emf 2.0 volts and internal resistance 0.10(Omega)is being...

    Text Solution

    |

  5. Shown n batteries connected to form a circuit. The resistances denote ...

    Text Solution

    |

  6. A copper rod of length 20cm and cross-sectional area 2mm^(2)is joined ...

    Text Solution

    |

  7. A wire of resistance 10Omega is bent to form a complete circle. Find i...

    Text Solution

    |

  8. find the currents in the different resistor shown in figure.

    Text Solution

    |

  9. Find the current supplied by the battery in the circuit shown in figur...

    Text Solution

    |

  10. Find the current supplied by the battery in the circuit shown in figur...

    Text Solution

    |

  11. Find the effective resistance between the points A and B in figure.

    Text Solution

    |

  12. Find the equivalent resistance of the network shown in figure between ...

    Text Solution

    |

  13. Find the equivalent resistance between the point a and b when (a) the ...

    Text Solution

    |

  14. Find the equivalent resistances of the nerwork shown in figure between...

    Text Solution

    |

  15. In the circuit shown in figure E,F, G and H are cell of emf 2,1,3, and...

    Text Solution

    |

  16. Find the equivalent resistance between the point a and b of the circui...

    Text Solution

    |

  17. Find the currents going through the three resistors R(1),R(2) and R(3)...

    Text Solution

    |

  18. Find the equivalent resistances between the points a and c of the netw...

    Text Solution

    |

  19. Twelve wire, each having resistance r, are joined to form a cube as sh...

    Text Solution

    |

  20. Find the equivalent resistance of the circuit of the previous problen ...

    Text Solution

    |