The resistance values of the Wheatstone bridge shown are: $P = 2000 \text{ }\Omega$, $Q = 500 \text{ }\Omega$, $R = 3000 \text{ }\Omega$. The battery voltage $E = 50 \text{ V}$. The battery has an internal resistance of $1 \text{ }\Omega$ and the Galvanometer (G) has a resistance of $50 \text{ }\Omega$. The value of the resistance $S$ for balanced condition is _____________ $\Omega$ (Answer in integer)
To solve for the resistance S that balances the Wheatstone bridge, we use the balance condition: P/Q = R/S.
Substituting the given values:
2000/500 = 3000/S
Simplifying the left side:
4 = 3000/S
To find S, rearrange the equation:
S = 3000/4
Calculating S:
S = 750 Ω
The resistance S for balanced condition is thus 750 Ω.
This value falls within the given range of 750 to 750.
Important Questions from Measurement of Resistance
In a megger, controlling torque is provided by-
When checked with an ohm meter an open resistor reads-
A megger is exclusively designed for measuring
Four terminal approach is used in measuring low resistance because it -
__________circuit is used to make precise measurement of a resistors value using resistors, voltage source and a galvanometer
