In a Wheatstone bridge, if the resistance P is increased, what effect does it ha
Practice Questions
Q1
In a Wheatstone bridge, if the resistance P is increased, what effect does it have on the balance condition?
Bridge remains balanced
Bridge becomes unbalanced
Bridge becomes short-circuited
Bridge becomes open-circuited
Questions & Step-by-Step Solutions
In a Wheatstone bridge, if the resistance P is increased, 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 resistances: P, Q, R, and S.
Step 3: Know the balance condition. The bridge is balanced when the ratio of the resistances in one leg equals the ratio in the other leg, specifically when (P/Q) = (R/S).
Step 4: Consider what happens when resistance P is increased. If P increases, the ratio (P/Q) becomes larger.
Step 5: Since the balance condition depends on the equality of the ratios, increasing P will disturb this equality.
Step 6: Conclude that when P is increased, the bridge becomes unbalanced, meaning it will no longer satisfy the balance condition.
