Home
Class 12
PHYSICS
An electron revolves in a circule at the...

An electron revolves in a circule at the rate of `10^(19)` rounds per second. The rquivlent current is `(e=1.6xx10^(-19)C)`

A

`1.0 A`

B

`1.6A`

C

`2.0A`

D

`2.6A`

Text Solution

AI Generated Solution

The correct Answer is:
To find the equivalent current due to an electron revolving in a circle at a rate of \(10^{19}\) rounds per second, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Concept of Current**: Current (I) is defined as the charge (Q) flowing per unit time (t). Mathematically, this is expressed as: \[ I = \frac{Q}{t} \] 2. **Identify the Charge of an Electron**: The charge of a single electron is given as: \[ e = 1.6 \times 10^{-19} \text{ C} \] 3. **Determine the Frequency of Revolution**: The electron revolves at a frequency (f) of: \[ f = 10^{19} \text{ rounds per second} \] 4. **Calculate the Time Period (T)**: The time period (T) is the time taken for one complete revolution and is the reciprocal of the frequency: \[ T = \frac{1}{f} = \frac{1}{10^{19}} \text{ seconds} \] 5. **Substitute Values into the Current Formula**: Now, substituting the values of charge and time into the current formula: \[ I = \frac{Q}{T} = \frac{1.6 \times 10^{-19} \text{ C}}{1 \times 10^{-19} \text{ s}} \] 6. **Perform the Calculation**: Simplifying the expression gives: \[ I = 1.6 \text{ A} \] ### Final Answer: The equivalent current due to the electron revolving in a circle is: \[ I = 1.6 \text{ A} \]
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Match the columns|4 Videos
  • COMMUNICATION SYSTEM

    DC PANDEY ENGLISH|Exercise Subjective|11 Videos
  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

In an atom electrons revolves around the nucleus along a path of radius 0.72Ã… making 9.4xx 10^(18) revolution per second. The equivalent current is (e=1.6xx10^(-19) C)

If an electron revolves in the circular path of radius 0.5A^(@) at a frequency of 5xx10^(15) cycles/sec. The equivalent electric current is (charge of an electron=1.6x10^-19)

The number of extra/short electrons in a conductor that has 14.4 xx 10^(-19) coulombs of positive charge is: (Charge on electron = 1.6 xx 10^(-19) coulombs)

An electric gun emits 2.0xx10^(16) electrons per second. What electric current does this correspond to ?

In a neon discharge tube 2.9 xx 10^(18) Ne^(+) ions move to the right each second while 1.2 xx 10^(18) eletrons move to the left per second. Electron charge is 1.6 xx 10^(-19) C . The current in the discharge tube

How many electrons pass through a bulb in 1 min, if the current is 400 mA. (e=1.6xx10^(-19)C) ?

In CE NPN transistor 10^(10 electrons enter the emitter in 10^(-6) s when it is connected to battery. About 5% electrons recombine with holes in the base. The current gain of the transistor is ……. . (e=1.6xx10^(-19)C)

In a hydrogen atom, an electron is revolving with an angular frequency 6.28 rad/s around the nucleus. Then the equivalent electric current is ____ 10^(-19)A

Find de-Broglie wavelength of electron with KE =9.6xx10^(-19)J .

The electron with change (q=1.6xx10^(-19)C) moves in an orbit of radius 5xx10^(-11) m with a speed of 2.2xx10^(6)ms^(-1) , around an atom. The equivalent current is

DC PANDEY ENGLISH-CURRENT ELECTRICITY-Medical entrances gallery
  1. The internal resistance of a 2.1 V cell which gives a current 0.2 A th...

    Text Solution

    |

  2. The resistance of the four arms P, Q, R and S in a Wheatstone's bridg...

    Text Solution

    |

  3. An electron revolves in a circule at the rate of 10^(19) rounds per se...

    Text Solution

    |

  4. A silver wire of radius 0.1 cm carries a current of 2A. If the charge ...

    Text Solution

    |

  5. A 1m long wire of diameter 0.31mm has a resistance of 4.2 Omega. If it...

    Text Solution

    |

  6. 24 cells of emf 1.5 V each having internal resistance of 1 ohm are con...

    Text Solution

    |

  7. The temperature coefficient of resistance of the material of a wire is...

    Text Solution

    |

  8. The emf of a cell E is 15 V as shown in the figure with an internal re...

    Text Solution

    |

  9. Copper and carbon wires are connected in series and the combined resis...

    Text Solution

    |

  10. Three conductors draw respectively currents of 1 A, 2 A and 4 A when c...

    Text Solution

    |

  11. The massses of the three wires of copper are in the ratio 1 : 3 : 5. A...

    Text Solution

    |

  12. In the circuit diagram,heat produces in R, 2R and 1.5 R are in the ra...

    Text Solution

    |

  13. Which one of the following electrical meter has the smallest resistanc...

    Text Solution

    |

  14. Two wires of the same materical having equal area of cross-section hav...

    Text Solution

    |

  15. Two bulbs 60 W and 100 W designed for voltage 220 V are connected in s...

    Text Solution

    |

  16. The drift speed of electrons in copper wire of diameter and length l i...

    Text Solution

    |

  17. A potentiometer wire of length 10 m and resistance 10 Omega per meter ...

    Text Solution

    |

  18. If a wire is stretched to four times its length, then the specific res...

    Text Solution

    |

  19. For the circuit shown in figure given below, the equivalent resistance...

    Text Solution

    |

  20. Two resistors of 6 Omega " and " 9 Omega are connected in series to a ...

    Text Solution

    |