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The balanced position of meter bridge is...

The balanced position of meter bridge is …… interchanging the positions of battery and galvanometer

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In the given circuit a bridge is shown in the balanced state.The meter bridge wire has a resistance of 1 Omega cm^(-1) .Calculate the unknown resistance X and the current drawn from the battery of negligible internal resistence. If the magnitude the position of galvanometer and the cell, how it will affect the position of the galvanometer ?

The positions of the second and the eighth digits of the number 39128564areinterchanged. Similarly, the positions of the fourth and the fifth digits are interchanged. The positions of the first and the six digits are interchanged and the positions of the third and the seventh digits are interchanged. Which of the following will be the third digit to the left of 3 after the rearrangement ?

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The Wheatstone bridge shown in the above figure is balanced. If the positions of the cell C and the galvanometer G are now interchanged, G will show zero deflection

(i) In a metre bridge, the balance point is found to be at 39.5 cm from the end A, when the resistor Y is of 12.5 Omega . Determine the resistance of X. Made of thick copper strips? (ii). Determine the balance point of the bridge above if X and Y are interchanged. (iii). what happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current?

Knowledge Check

  • The positions of the second and the eighth digits of the number 39128564areinterchanged. Similarly, the positions of the fourth and the fifth digits are interchanged. The positions of the first and the six digits are interchanged and the positions of the third and the seventh digits are interchanged. Which of the following will be the third digit to the left of 3 after the rearrangement ?

    A
    2
    B
    4
    C
    6
    D
    8

  • The Wheatstone bridge shown in the above figure is balanced. If the positions of the cell C and the galvanometer G are now interchanged, G will show zero deflection

    A
    in all cases
    B
    only if all the resistances are qual
    C
    only if `R_(1)=R_(3)` and `R_(2)=R_(4)`
    D
    only if `R_(1)//R_(3)=R_(2)//R_(4)`

  • The Wheatstone's bridge shown in the Fig. A2.5 is balanced. If the positions of the cell C and the galvanometer F are now interchanged, G will show zero deflection

    A
    in all cases
    B
    only if all the resistances
    C
    only if `R_1 = R_3 and R_2= R_1`
    D
    only if `R_1//R_3 = R_2//R_4`