Which of the following is NOT a condition for a Wheatstone bridge to be balanced?
Correct Answer: Resistances must be equal
- Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances.
- Step 2: Know that a Wheatstone bridge has four resistors arranged in a diamond shape.
- Step 3: Learn that for the bridge to be balanced, the ratio of the resistances in one branch must equal the ratio in the other branch.
- Step 4: Identify the conditions for balance: the ratios of the resistances must be equal, and the bridge must be connected properly.
- Step 5: Realize that the resistances themselves do not need to be equal, just that their ratios must match.
- Step 6: Conclude that the statement about resistances needing to be equal is NOT a condition for balance.
No concepts available.
