Home
Class 12
PHYSICS
Three resistors, an ideal cell are conne...

Three resistors, an ideal cell are connected as shown in figure. The switch is initially open. When we close the swithc, the current in the resistor `R_(2)` will.

A

Increases

B

decrease

C

remain same

D

increase or decrease depending on the value of `R_(1)`

Text Solution

Verified by Experts

The correct Answer is:
A

Because `R_(3)` is shorted, potential difference across `R_(2)` is increased. Hence current is increased. This increase is independent of value of `R_(1)`.
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Find the current in the resistor shown in figure.

A light bulb a capacitor and a battery are connected together as shown in figure, with switch S initially open. When the switch s is closed, which statement is true ?

shows three resistances are connected with switch S initially the switch is open. When the switch S is closed find the current passed through it.

Four silicon diodes are connected as shown in the figure. Assuming the diodes to be ideal. The current through the resistor R is

Three resistances are connected to form a T-shape as shown in the figure. Then, the current in the 4Omega resistor is

In the figure shown the current through 2 Omega resistor is

For the circuit shown in the figure, the current in the 4 Omega resistor is

The resistors R_(1),R_(2),R_(3) and R_(4) are connected as shown in the figure. S_(1) and S_(2) are two switches . Discuss the flow of current through the resistors when (1) S_(1) and S_(2) both are closed. (2) S_(1) and S_(2) both are open. (3) S_(1) is closed and S_(2) in open.

ALLEN-TEST PAPERS-PAPER 2
  1. Which one of the following equation is correct for the circuit shown. ...

    Text Solution

    |

  2. The following diagram represents an electrical circui containing two u...

    Text Solution

    |

  3. Three resistors, an ideal cell are connected as shown in figure. The s...

    Text Solution

    |

  4. In the diagrams, all light bulbs are identical and all emf sources are...

    Text Solution

    |

  5. In the, Ohm's law experiment ot find resistance of unknown resistor R,...

    Text Solution

    |

  6. An electron passes between two parallel plate of a capacitor as shown ...

    Text Solution

    |

  7. In the figure shown the equivalent capacitance between 'A' and 'B' is ...

    Text Solution

    |

  8. Consider the shown circuit. The capacitor is uncharged when the swith ...

    Text Solution

    |

  9. An uncharged capacitor is connected in series with a resistor and a ba...

    Text Solution

    |

  10. In the circuit shown the capacitor is initially uncharged. The charge ...

    Text Solution

    |

  11. Two large oppositely charged insulated plates have a uniform electric ...

    Text Solution

    |

  12. An alpha is moving along a circle of radius R with a constant angular ...

    Text Solution

    |

  13. A current 1 flows along a triangle loop having sides of equal length a...

    Text Solution

    |

  14. A small current element of length 'd l' and carrying current is placed...

    Text Solution

    |

  15. Let B(P) and B(Q) be the magnetic field produced by the wire P and Q w...

    Text Solution

    |

  16. A long straight solid metal wire of radius R carries a current I, unif...

    Text Solution

    |

  17. A current carrying wire AB of the length L is turned along a circle, a...

    Text Solution

    |

  18. An electron moving with a velocity v along the positive x-axis approac...

    Text Solution

    |

  19. If the ratio of time periods of circular motion of two charged particl...

    Text Solution

    |

  20. A current flows through a rectangular conductor in the presence of uni...

    Text Solution

    |