Class 12 Exam > Class 12 Questions > When Wheatstone bridge is in balance conditio...
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When Wheatstone bridge is in balance condition, the current through galvanometer will be
- a)Zero
- b)Maximum
- c)Minimum
- d)Depends upon the type of galvanometer
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
When Wheatstone bridge is in balance condition, the current through ga...
The bridge is said to be balanced when deflection in galvanometer is zero(Ig=0), i.e., no current flows through the galvanometer(branch BD).In the balanced condition,
P/Q=R/S
On mutually changing the position of the cell and galvanometer, this condition will not change.
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When Wheatstone bridge is in balance condition, the current through ga...
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When Wheatstone bridge is in balance condition, the current through ga...
Explanation:
- Wheatstone bridge is a circuit used to measure unknown resistance.
- It consists of four resistances connected in the form of a diamond.
- When a potential difference is applied to the bridge circuit, a current flows through it.
- If the resistance in the two arms are equal, then the current will divide equally and the voltage drop across the bridge will be zero.
- When the Wheatstone bridge is in balance condition, the potential difference between the two nodes is zero.
- Thus, no current flows through the galvanometer when the bridge is in balance condition.
- Therefore, the current through the galvanometer will be zero.
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When Wheatstone bridge is in balance condition, the current through galvanometer will bea)Zerob)Maximumc)Minimumd)Depends upon the type of galvanometerCorrect answer is option 'A'. Can you explain this answer?
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