In a Wheatstone bridge, if the resistance R4 is adjusted to achieve balance, wha

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Question: In a Wheatstone bridge, if the resistance R4 is adjusted to achieve balance, what does this imply about the other resistances?

Options:

Correct Answer: They maintain a specific ratio.

Solution:

Adjusting R4 to achieve balance implies that the other resistances maintain a specific ratio.

In a Wheatstone bridge, if the resistance R4 is adjusted to achieve balance, what does this imply about the other resistances?

In a Wheatstone bridge, if the resistance R4 is adjusted to achieve balance, what does this imply about the other resistances?

Correct Answer: The other resistances are in a specific ratio.

Step 1: Understand that a Wheatstone bridge consists of four resistors arranged in a diamond shape.
Step 2: Identify the resistors as R1, R2, R3, and R4.
Step 3: Know that the bridge is balanced when the voltage across the middle (between R2 and R4) is zero.
Step 4: Realize that to achieve balance, the ratio of R1 to R2 must equal the ratio of R3 to R4.
Step 5: This means that if you adjust R4, you are changing the balance point, but the relationship between R1, R2, and R3 must still hold.
Step 6: Conclude that adjusting R4 to achieve balance implies that R1/R2 = R3/R4.

Wheatstone Bridge Balance Condition – In a Wheatstone bridge, balance is achieved when the ratio of the resistances in one leg of the bridge is equal to the ratio in the other leg, allowing for no current to flow through the galvanometer.