Home
Class 12
PHYSICS
Find the current through the resistance ...

Find the current through the resistance R in figure.If (a)`R=12 Omega`(b)`R=48 Omega`.

Text Solution

Verified by Experts

(a) When `R = 12 Omega`
the wire SF becomes ineffective due to the net `(-)ve voltage`,
Hence, current through `R`
`= (10)/(24) = 0.4166 = 0.42A`
`(b) Similarly for `R = 48 Omega`
`i = (10)/(48+12) = (10)/(60) = 0.16A`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR AND SEMICONDUCTOR DEVICES

    HC VERMA|Exercise objective II|1 Videos

  • PHOTOMETRY

    HC VERMA|Exercise Exercises|16 Videos

  • SPEED OF LIGHT

    HC VERMA|Exercise Exercises|3 Videos

Similar Questions

Explore conceptually related problems

Calculate the current flows through resistance 2Omega .

A cell sends a current through a resistance R_(1) for time t , next the same cell sends current through another resistance R_(2) for the time t If the same amount of heat is developed in both the resistance then find the internal resistance of the cell

A cell of e.m.f. 2V and negligible internal resistance is connected to resistor R_(1) and R_(2) as shown in the figure. The resistance of the Voltmeter R_(1) and R_(2) are 80Omega,40Omega and 80Omega respectively. The reading of the voltmeter is:-

(a) Three resistors 2 Omega 4 Omega and 5 Omega are combined in parallel. What is the total resistance of the combination ? (b) If the combination is connected to a bettery of emf 20 V and neglibible internal resistance, determine the current through each resistor, and the total current drawn from the battery.

In Ohm's experiment to experiment to measure resistance different observation of unkowwn resistance are 4.12 Omega 4.08 Omega and 4.41 Omega . Find average absolute error, relative error and percentage error.

A cube is constructed by connecting 12 wires of equal resistance as shown in figure. The equivalent resistance between the points A and B shown in the figure is..... . The resistance of each wire is of r Omega . A and B are the midpoints of the sides PQ and VU respectively.

In the circuit diagram given in figure suppose the resistors R_1, R_2 and R_3 have the values 5Omega, 10 Omega, 30 Omega respectively, which have been connected to a battery of 12V. Calculate (a) the current through each resistor, (b) the total current in the circuit, and (c) the total circuit resistance.

Maximum 1 A current can pass through a bulb haVing resistance 100 Omega . What will be the power of this bulb?

In the circuit shown the cells A and B have negligible resistance. For V_(A) = 12 V, R_(1) = 500 Omega and R = 100 Omega , the galvanometer (G) shows no deflection. The value of V_(B) is

HC VERMA-SEMICONDUCTOR AND SEMICONDUCTOR DEVICES-Exercises
  1. In a p-n junction, the depletion region is 400nm wide and and electric...

    Text Solution

    |

  2. The potential barrier exists across the junction is 0.2volt.What minim...

    Text Solution

    |

  3. In a p-n junction,a potential barrier of 250 mev exsists across the ju...

    Text Solution

    |

  4. When a p-n junction is reverse-biased,the current becomes almost const...

    Text Solution

    |

  5. The drift current in a p-n junction is 2.0(mu)A. Estimate the number o...

    Text Solution

    |

  6. The current-voltage characteristic of an ideal p-n junction diode is g...

    Text Solution

    |

  7. Consider a p-n junction diode having the characterstic i=i0(e^eV//kT-1...

    Text Solution

    |

  8. Calculate the current through the circuit and the petential difference...

    Text Solution

    |

  9. Each of the resistance shown in figure has a value of 20 Omega.Find th...

    Text Solution

    |

  10. Find the current through the resistance in the circuits shown in figur...

    Text Solution

    |

  11. What are the readings of the ammeterA1and A2shown in figure.Neglect th...

    Text Solution

    |

  12. Find the curent through the battery in each of the circuit shown in fi...

    Text Solution

    |

  13. Find the current through the resistance R in figure.If (a)R=12 Omega(b...

    Text Solution

    |

  14. Draw the current-voltage characteristics for the device shown in figur...

    Text Solution

    |

  15. Find the equivalent resistance of the network shown in figure

    Text Solution

    |

  16. When the base current in a transistor is changed from 30 mu Ato 80 mu ...

    Text Solution

    |

  17. A load resistor of 2 k Omega is connected in the collector branch of a...

    Text Solution

    |

  18. Let X=A bar(BC)+B bar(CA)+C bar(AB).Evalute X for (a)A=1,B=0,C=1 ...

    Text Solution

    |

  19. Design a logical circuit using AND, OR and NOT gates to evaluate A bar...

    Text Solution

    |

  20. Show that AB+bar(AB)is always 1.

    Text Solution

    |