Home
Class 12
PHYSICS
The emf E and the internal resistance r ...

The emf `E` and the internal resistance r of the battery shown in figure are `4.3 V` and `1.0 Omega` respectively. The external resistance `R` is `50 Omega`. The resistances of the ammeter and voltmeter are `2.0 Omega` and `200 Omega` respectively.
(a) Find the readings of the two meters.
(b) The switch is thrown to the other side. What will be the readings of the two meters now?

Promotional Banner

Topper's Solved these Questions

  • CAPACITANCE

    PHYSICS GALAXY - ASHISH ARORA|Exercise UNSOLVED NUMERICAL PROBLEMS|40 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs|33 Videos

Similar Questions

Explore conceptually related problems

The emf (epsilon) and the internal resistance r of the battery shown in figure are 4.3V and 1.0(Omega) respectively.the external resistance R is 50(Omega) .The resistances of the ammeter and voltmeter are 2.0(Omega) and 200(Omega) respectively.(a)Find the reading of the two meters.(b) Tje switch is thrown to the other side, What will be the readings of the two meters now?

The emf E and the internal resistance r of the battery shown in figure are 4.3V and 1.0Omega respectively. The external resistan ce R is 50Omega . The resistance of the ammeter and voltameter are 2.0Omega an d 200Omega respectively. Find the respective reading of the voltmeter.

The voltmeter in figure has a resistance of 200 Omega . The reading of voltmeter is

In the circuit shown in figure ammeter and voltmeter are ideal. If E=4 V,R=9Omega and r=1Omega then readings of ammeter and voltmeter are

In the adjoining circuit diagram, the readings of ammeter and voltmeter are 2 A and 120 V, respectively. If the value of R is 75Omega , then the voltmeter resistance will be

The resistance in the two arms of the meter bridge are 5 Omega and R Omega , respectively. When the resistance R is shunted with an equal resistance, the new balance point is 1.6 l_(1) . The resistance R is

If resistance of voltmeter is 10000 Omega and resistance of ammeter is 2Omega then find R when voltmeter reads 12 V and ammeter reads 0.1 A

A battery of EMF E produces currents 4 A and 3 A when connected to external resistance 1 Omega and 2 Omega respectively. The internal resistance of the battery is

For the adjoining circuit diagram, the readings of ammeter and voltmeter are 2A and 120 V respectively. If the value of R is 75 Omega , then the voltmeter resistance will be

PHYSICS GALAXY - ASHISH ARORA-CURRENT ELECTRICITY-All Questions
  1. A thin uniform wire AB of length 1 m, an unknown resistance X and a re...

    Text Solution

    |

  2. A micrometer has a resistance of 100 Omega and full scale deflection c...

    Text Solution

    |

  3. The emf E and the internal resistance r of the battery shown in figure...

    Text Solution

    |

  4. An ammeter and a voltmeter are connected in series to a battery of emf...

    Text Solution

    |

  5. In the circuit shownin figure V1 and V2 are two voltmeter of resistanc...

    Text Solution

    |

  6. A nonideal battery is connected to a resistor. Is work done by thr bat...

    Text Solution

    |

  7. Under what conditions is Ohm's law applicable ?

    Text Solution

    |

  8. When a current is established in a wire, the free electrons drift in t...

    Text Solution

    |

  9. A primary and a secondary cell have the same EMF which of these will p...

    Text Solution

    |

  10. A large hollow metallic sphere A is charged positively to a potential ...

    Text Solution

    |

  11. A storage battery is to be charged from a D.C. supply. Should the posi...

    Text Solution

    |

  12. Can Ohm's law be used to calculate currents in various also? parts of ...

    Text Solution

    |

  13. Can the potential difference across a battery be greater than its emf?

    Text Solution

    |

  14. A fan with copper winding in its motor consumes less power as compared...

    Text Solution

    |

  15. Do the electrodes in an electrolytic cell have fixed polarity like a b...

    Text Solution

    |

  16. If the current flowing in a copper wire be allowed to flow in another ...

    Text Solution

    |

  17. A steady current is flowing in a cylindrical conductor. Is there any e...

    Text Solution

    |

  18. The thermal energy developed in a current-carrying resistor is given b...

    Text Solution

    |

  19. There are two wires of the same metal of same area of cross section bu...

    Text Solution

    |

  20. When a current passes through a resistor, its temperature increases. I...

    Text Solution

    |