Home
Class 10
PHYSICS
To study the dependence of current on th...

To study the dependence of current on the potential difference across a resistor, two set ups shown in fig. A and B respectively. They kept the contact in different positions marked (1), (2), (3), (4) in the two figures.


For the two students thier ammeter and voltmeter readings will be minimum when the contact J is in the positions

A

(1) both the set ups

B

(4) in both the set ups

C

(4) in set ups (A) and (1) set up (B)

D

(1) in set up (A) and (4) in set up(B)

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    MODERN PUBLICATION|Exercise EXERCISE|303 Videos
  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    MODERN PUBLICATION|Exercise EXERCISE|265 Videos

Similar Questions

Explore conceptually related problems

In an experimenal to study the dependance of current on potential difference across a resistor, a student obtained graph s shown below: Calculate the value of resistance of the resistor.

The current flowing through a conductor and the potential difference across it two ends are as per readings of the ammeter and voltmeter shown below. The resistance of the conductor would be

The current I and voltage V curves for a given metallic wire at two different temperatures T_1 and T_2 are shown in the figure. Then ,

The figure VSAQ 29 shows a plot of three curves a,b,c, showing the variation of photocurrent in collector plate potential for three different intensities I_1 , I_2 and I_3 having frequencies v_1 , v_2 and v_3 respectively incident on a photosensitive surface. Point out the two curves for which the incident raidations have the same frequency but different intensities.

The potential difference across the terminals of a battery is 8.4 V when there is a current of 1.50 A in the battery from the negative to the positive terminal. When the current is 3.50 A in, the reverse direction, the potential difference becomes 9.4 V. The internal resistance and e.m.f. battery are:

Two stones are thrown up simultaneously from the edge of a cliff 200 m high with initial speeds of 15 m s^-1 and 30 m s^-1 . Verify that the graph shown in Fig. 3.27 correctly represents the time variation of the relative position of the second stone with respect to the first. Neglect air resistance and assume that the stones do not rebound after hitting the ground. Take g = 10 m s^-2 . Give the equations for the linear and curved parts of the plot.

A small retangular coil ABCD contains 140 turns of wire. The sides AB and BC of the coil are of length 4.5 and 2.8 cm respectively, as shown in the figure The coil is held between the poles of a large magnet so that the coil can rotate about an axis thorugh its centre. The magnet produces a uniform magnetic field of flux density B between its poles. When the current in the coil is 170 mA, the maximum torque produced in the coil is 2.1 xx 10^-3 N m . The current in the coil in (a) is switched off and the coil s positioned as shown in the figure. The coil is then turned thorugh an angle of 90^@ in a time of 0.14 s. Calculate the average e.m.f. induced in the coil.

Two batteries of e.m.f. 4V and 8V with internal resistances 1 Omega and 2 Omega are connected in a circuit with a resistance of 9 Omega as shown in figure. The current and potential difference between the points A and B

MODERN PUBLICATION-ELECTRICITY-EXERCISE
  1. The only correct statement for the following circuit is

    Text Solution

    |

  2. Three students (A),(B) and ( C) connected their two resistor R1 and R2...

    Text Solution

    |

  3. To study the dependence of current on the potential difference across ...

    Text Solution

    |

  4. While performing the experiment to study the dependence of current on ...

    Text Solution

    |

  5. In an experiment to determine equivalent resistance of two resistors R...

    Text Solution

    |

  6. A 6 V battery for internal resistance 2 ohm is connected across a 10 o...

    Text Solution

    |

  7. A student set up his for finding the equivalent resistance of a seris ...

    Text Solution

    |

  8. Complete the prime factor tree :

    Text Solution

    |

  9. An ammeter and a voltmeter are joined in series to a cell. Their readi...

    Text Solution

    |

  10. The number of division in ammeter of range 2A is 10 and voltmeter of r...

    Text Solution

    |

  11. Ohms law experiment is performed seperately with individual resistors ...

    Text Solution

    |

  12. In Ohm's law experiment the physicla quantity quantities which is are ...

    Text Solution

    |

  13. The graph between current and the potential diference in the experimen...

    Text Solution

    |

  14. The circuit diagram shown below is used to find the effective resistqn...

    Text Solution

    |

  15. A student set up electric circuit shown here for finding the equivalen...

    Text Solution

    |

  16. In the circuit given ahead, the resistors R1 and R2 are connected

    Text Solution

    |

  17. Identify the circuit in which the electrical components have been prop...

    Text Solution

    |

  18. 4 students plotted the graph showing dependence of current I on potent...

    Text Solution

    |

  19. Define one watt hour.

    Text Solution

    |

  20. A cylinder of a material is 10 cm long and has a cross section of 2 cm...

    Text Solution

    |