Home
Class 12
PHYSICS
A current of one ampere is flowing throu...

A current of one ampere is flowing through a wire. Calculate the number of electrons flowing through the cross-section of the wire per second?

Text Solution

Verified by Experts

`l=q/t="ne"/l`
`n=(It)/e=(1xx1)/(1.6xx10^(-19))=6.25xx10^19`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    PATHFINDER|Exercise QUESTION BANK|39 Videos
  • ELECTRIC CHARGES & FIELDS

    PATHFINDER|Exercise QUESTION BANK|45 Videos

Similar Questions

Explore conceptually related problems

A copper wire of diameter 2/(3sqrtpi)mm is carrying a current of 1 amp. Calculate the number of free electrons which flow past any cross section of the wire per sec Also find the average speed with which free electrons are flowing in the copper wire assuming that there is one free electron per atom of copper. Number of atmos per cm^3 of copper =9 times 10^22 , electronic charge =1.6 times 10^-19 coulomb.

A conductor of uniform cross-section is carrying a current of a ampere. The number of free electrons flowing across the across the cross- section of the condukctor per second is

In a closed circuit,the current I(in ampere) at an instant of time t( in seconds) is given by I=4-0.08t . What will be the number of electrons flowing in 50 s through the cross section of the conductor ? (charge of an electron= 1.6 times 10^-19C )

A conductor of uniform cross-section is carrying a current of 1 ampere. The number of free electrons flowing across the cross section of the conductor per second is

The current flowing through a wire depends on time as l=9t^2+4t+1 . What will be the amount of charge flowing through the cross section of wire in time t=1s to t=2s?

If a current of 0.5A flows through a metallic wire for 2h, then how many electrons would flow through the wire?

The current flowing through the 3Omega resistor in the circuit is

A current of 2 ampere flows through a resistance of 5Omega for 40 seconds, find the heat produced in calories :

Current I flows through a wire depends on time t as follows I=3 t^2+2t+5 How much charge flows through the cross section of the wire from t=0 to t=2 s ?

It 1 A current is passed through a metallic wire, how many electrons pass through a point in the wire per second.

PATHFINDER-CURRENT ELECTRICITY - I AND II-QUESTION BANK
  1. A current of one ampere is flowing through a wire. Calculate the numbe...

    Text Solution

    |

  2. The number density of conduction electron in copper is 8.5xx10^28(m^-3...

    Text Solution

    |

  3. One end of an aluminium wire whose diameter is 2.5 mm is welded to one...

    Text Solution

    |

  4. Two wires of equal length, one of copper and the other of manganin, ha...

    Text Solution

    |

  5. If a copper wire is stretched to make its radius decrease by 0.15%. th...

    Text Solution

    |

  6. A wire has a resistanceof 2 ohm at 273 K and a resistance of 2.5 ohm a...

    Text Solution

    |

  7. The resistance of two conductors in series is 40 ohm and their resista...

    Text Solution

    |

  8. Figure shows a cube made of 12 resistance across a cube edge ab.

    Text Solution

    |

  9. Find the equivalent resistance between points A and B in the following...

    Text Solution

    |

  10. The four colurs on a resistance are : brown, yellow, green and gold as...

    Text Solution

    |

  11. A battery of emf 10V and internal resistance 3 ohm is connected to a r...

    Text Solution

    |

  12. Current flowing in the following circuit will be

    Text Solution

    |

  13. The steady state current in a 2Omega resistor shown in fig will be - (...

    Text Solution

    |

  14. A coil of resistance 2Omega is immersed in 1 kg of water and is connec...

    Text Solution

    |

  15. An electric bulb is marked 100W,230V. If the supply voltage drops to 1...

    Text Solution

    |

  16. Two heaters are marked 200 V, 300 W. 300 V, 600 W. If the heaters are ...

    Text Solution

    |

  17. A potentiometer wire of length 100 cm has a resistance of 10Omega. It ...

    Text Solution

    |

  18. The e.m.f of a thermocouple one junction of which is kept at 0^@C, is ...

    Text Solution

    |

  19. In producing chlorine through electrolysis 100 KW power at 125 volts i...

    Text Solution

    |

  20. In the Bohr model of hydrogen atom, the electron is pictured to rotate...

    Text Solution

    |