Current Electricity Test

Result

Current Electricity Test - 10

Score
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Weekly Quiz Competition

Question 1
1 / -0

A Wheatstone bridge is balanced for four resistors R₁, R₂, R₃ and R₄ with a Leclanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance will ____________

A
Change and can be obtained by changing R₁

B
Change and can be obtained by changing R₄

C
Change and can be obtained by changing R₁ and R₄

D
Not change

Solution

The balance point will not change.
For balancing of wheat stone bridge four arms of resistors are responsible. Interchange the position of galvanometer and cell does not affect balancing of wheat stone bridge.
Question 2
1 / -0

A Wheatstone bridge ABCD is balanced with a galvanometer between the points B and D. At balance the resistance between the points B and D is:

A
Infinite

B
Zero

C
Between zero and infinite

D
None of these

Solution

No current passes through the Galvanometer in the bridge balance condition.
Therefore, the resistance between B and D is infinite.