In a Wheatstone bridge, if the resistance R2 is decreased, what effect does it h

Practice Questions

Q1
In a Wheatstone bridge, if the resistance R2 is decreased, what effect does it have on the balance condition?
  1. It will balance the bridge.
  2. It will unbalance the bridge.
  3. It has no effect.
  4. It will increase the current.

Questions & Step-by-Step Solutions

In a Wheatstone bridge, if the resistance R2 is decreased, what effect does it have on the balance condition?
  • Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
  • Step 2: Identify the components of the Wheatstone bridge. It has four resistors: R1, R2, R3, and R4.
  • Step 3: Know the balance condition. The bridge is balanced when the ratio of R1 to R2 is equal to the ratio of R3 to R4.
  • Step 4: Recognize what happens when R2 is decreased. If R2 becomes smaller, the ratio of R1 to R2 changes.
  • Step 5: Determine the effect on balance. Since the ratio of R1 to R2 is no longer equal to the ratio of R3 to R4, the bridge becomes unbalanced.
No concepts available.
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