Home
Class 12
PHYSICS
A battery of emf 10 V and internal resis...

A battery of emf 10 V and internal resistance `3 Omega` is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?

Text Solution

Verified by Experts

`I=(E)/(R+r)or`
`R=(E)/(I)-r-(10)/(0.5)-3=17Omega`
`V=IR=0.5xx17=8.5V`.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - IA|2 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL -II PRACTICE SHEET (ADVANCED) (Linked Comprehension Type Questions))|9 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|27 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|42 Videos

Similar Questions

Explore conceptually related problems

A battery of emf 15 V and internal resistance of 4Omega is connected to a resistor. If the current in the circuit is 2A and the circuit is closed. Resistance of the resistor and terminal voltage of the battery will be

A battery having 12V emf and internal resistance 3Omega is connected to a resistor. If the current in the circuit is 1A, then the resistance of resistor and lost voltage of the battery when circuit is closed will be

A battery of emf 2V and internal resistance 0.5(Omega) is connected across a resistance 1.5(Ω). Find the current flow through battery ?

A battery of emf 2 V and initial resistance 1 Omega is connected across terminals A and B of the circuit shown in figure .

A battery of e.m.f. 15 V and internal resistance 3 Omega is connected to two resistors 3 Omega and 6 Omega connected in parallel. Find : the current in 3 Omega resistor,

A battery of e.m.f. 15 V and internal resistance 3 Omega is connected to two resistors 3 Omega and 6 Omega connected in parallel. Find : the current in 6 Omega resistor.

A battery of e.m.f. 15 V and internal resistance 3 Omega is connected to two resistors 3 Omega and 6 Omega connected in parallel. Find : the current through the battery,

A battery of e.m.f. 15 V and internal resistance 3 Omega is connected to two resistors 3 Omega and 6 Omega connected in parallel. Find : the p.d. between the terminals of the battery,

A battery of emf 12V and internal resistance 2 Omega is connected two a 4 Omega resistor. Show that the a voltmeter when placed across cell and across the resistor in turn given the same reading

An ideal voltmeter V is connected to a 2.0 Omega resistor and a battery with emf 5.0 V and internal resistance 0.5 Omega as shown in figure (a) What is the current in the 2.0 Omega resistor? (b) What is the terminal voltage of the battery? (c) What is the reading of the voltmeter?

AAKASH SERIES-CURRENT ELECTRICITY-PROBLEMS
  1. A battery if internal resistance 4Omega is connected to the network of...

    Text Solution

    |

  2. A fuse wire with radius of 0.2mm blows off with a current of 5 Amp. Th...

    Text Solution

    |

  3. A battery of emf 10 V and internal resistance 3 Omega is connected to ...

    Text Solution

    |

  4. When a current drawn from a battery is 0.5A, its terminal potential di...

    Text Solution

    |

  5. An ideal battery passes a current of 5A through a resistor. When it is...

    Text Solution

    |

  6. When a resistor of 11Omega is connected in series with an electric cel...

    Text Solution

    |

  7. When a battery is connected to the resistance of 10Omega the current i...

    Text Solution

    |

  8. The potential difference across the terminals of battery is 10 V when ...

    Text Solution

    |

  9. Two cells A and B with same e.m.f of 2 V each and with internal resist...

    Text Solution

    |

  10. Two cells A and B each of 2V are connected in series to an external re...

    Text Solution

    |

  11. In the given circuit as shown below, calculate the magnitude and direc...

    Text Solution

    |

  12. Two batteries each of emf E and internal resistance r are connected in...

    Text Solution

    |

  13. In the steady state of the below given circuit, find the charge on the...

    Text Solution

    |

  14. Tweleve celles each having the same emf are connected in series and ar...

    Text Solution

    |

  15. A voltmeter with resistance 500 Omega is used to measure the emf of a ...

    Text Solution

    |

  16. Find the emf (V) and internal resistance (r ) of a single battery whic...

    Text Solution

    |

  17. Consider the network as shown in Fig. Current is supplied to the netwo...

    Text Solution

    |

  18. For the circuit shown in the figure, potential difference between poin...

    Text Solution

    |

  19. In the network shown A, B and C are at potentials of 70 V, zero V and ...

    Text Solution

    |

  20. In the given circuit values are as follows epsilon(1)=2V, epsilon(2)=4...

    Text Solution

    |