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The balanced condition of a Wheatstone bridge circuit occurs when the ratio of the resistances in one branch is equal to the ratio in the other branch, specifically when ( \frac{R_1}{R_2} = \frac{R_3}{R_4} ). Under this condition, the voltage across the galvanometer is zero, indicating no current flows through it. This balance allows for precise measurements of unknown resistances by comparing them to known resistances. The bridge circuit is often used in applications such as strain gauges and temperature sensors.
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At what condition the voltmeter connected across the wheatstone bridge will be zero?
At a balanced condition the voltmeter connected across the wheatstone bridge will be zero.
When a Wheatstone bridge is in a balanced condition the center voltmeter in the bridge?
When the resistance in all four are equal
Why a wheatstone circuit is called a bridge?
An electrical circuit used to measure an unknown electrical resistance is called a Wheatstone bridge. It is called a bridge because it balances two legs of a bridge circuit.
What is Wheatstone's bridge?
The wheatstone bridge is an instrument used to measure electrical resistance by means of balancing a bridge circuit. The bridge circuit contains two legs, one of which contains the unknown resistance. Variations in wheatstone bridge can be employed to measure inductance, capacitance, and impedance also.
What is a Wheatstone?
The wheatstone bridge is an instrument used to measure electrical resistance by means of balancing a bridge circuit. The bridge circuit contains two legs, one of which contains the unknown resistance. Variations in wheatstone bridge can be employed to measure inductance, capacitance, and impedance also.
What do you mean balance condition of a bridge circuit?
The balance condition of a bridge circuit, such as a Wheatstone bridge, occurs when the ratio of resistances in one arm of the bridge is equal to the ratio in the other arm, resulting in zero voltage across the bridge's output terminals. This condition allows for precise measurements of unknown resistances by comparing them to known values. When balanced, the circuit is in equilibrium, and no current flows through the galvanometer connected across the bridge. Achieving this balance is crucial for accurate sensor readings and measurements in various applications.
Why galvanometer is connected in wheatstone bridge?
A Wheatstone Bridge is used to measure resistance of an electrical / electronic component. The galvanometer (which was used to measure voltage) has now been replaced by the Multimeter.Both are not used today.AnswerA Wheatstone Bridge has most definitely NOT been replaced by a multimeter! It uses a completely-different method of measuring resistance and is significantly more accurate than a multimeter. The purpose of the very sensitive galvanometer is to detect when the Bridge circuit is 'balanced', by sensing the current (not voltage!) passing through it. When no current flows, the Bridge is balanced.
What happens when unknown resistance is changed to other armin wheatstone bridge?
Changing the unknown resistance in a Wheatstone bridge will result in an imbalance in the circuit, causing a potential difference across the bridge. This potential difference can be used to determine the new value of the unknown resistance by adjusting other known resistances until the bridge is balanced again.
State 3 functions of wheatstone bridge?
Wheatstone bridge is used to calculate the resistance of unknown resistor in the circuit.
Why doesn't any current flow through the galvanometer in a balanced Wheatstone bridge?
There is no current flow through the galvanometer in a balanced Wheatstone bridge because, in the balanced state, the voltage on both terminals of the galvanometer is the same. Since the voltage differential in zero, there can be no current.
What is the function of galvanometer in the bridge circuit?
In a bridge circuit, a galvanometer is used as a sensitive measuring instrument to detect small differences in potential between two points. It indicates whether the bridge is balanced or unbalanced by showing a current flow or deflection in its needle. When the bridge is balanced, the galvanometer reads zero, allowing for precise measurements of resistance or impedance in the circuit. This function is crucial in applications such as Wheatstone bridges for determining unknown resistances.
Why using wheatstone bridge in transducer?
You use a transducer in a wheatstone bridge. The wheatstone bridge allows you to find an unknown resistance.
