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Outline:About Wheatstone Bridge What is Balance condition of Wheatstone Bridge? Draw a circuit with 4 resistors, 1 DC power supply, 1 Switch and 1 ammeter in CircuitJS simulator Observe the yellow dots indicating the current flow direction in the circuit Change the value of 3 resistors to 200, 400, 400 ohms Keep the 4th resistor as unknown value Find the value of the 4th resistor with Wheatstone Bridge balanced condition formula The balanced condition formula is P/Q = R/S. To find S, the formula becomes S = R x Q / P Change the 4th resistor value in the circuitJS with the value of S Note the ammeter shows zero value which shows the Wheatstone Bridge is in balanced condition
About Wheatstone Bridge What is Balance condition of Wheatstone Bridge? Draw a circuit with 4 resistors, 1 DC power supply, 1 Switch and 1 ammeter in CircuitJS simulator Observe the yellow dots indicating the current flow direction in the circuit Change the value of 3 resistors to 200, 400, 400 ohms Keep the 4th resistor as unknown value Find the value of the 4th resistor with Wheatstone Bridge balanced condition formula The balanced condition formula is P/Q = R/S. To find S, the formula becomes S = R x Q / P Change the 4th resistor value in the circuitJS with the value of S Note the ammeter shows zero value which shows the Wheatstone Bridge is in balanced condition
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