Wheatstone Bridge

A Wheatstone bridge is an electrical circuit used for measuring resistance. It consists of four resistors connected in a diamond shape with two ends of the diamond connected to a voltage source and a galvanometer. The resistance to be measured is connected between the two arms of the diamond.

Working Principle

The Wheatstone bridge works on the principle of null deflection, which means that when the resistance in the two arms of the bridge is equal, the galvanometer shows zero deflection. The formula for calculating the resistance is given by R = (R1/R2) * (R3/R4), where R1 and R2 are the resistances in one arm of the diamond, and R3 and R4 are the resistances in the other arm of the diamond.

Connected Between the Two Ends

The resistance to be measured is connected between the two ends of the Wheatstone bridge, which are the two arms of the diamond. When the resistance in the two arms of the bridge is equal, the galvanometer shows zero deflection, and the resistance can be calculated using the formula mentioned above.

Battery and Galvanometer

The battery is connected to one end of the diamond, and the galvanometer is connected to the other end of the diamond. The battery provides a constant voltage, and the galvanometer measures the current flowing through the circuit.

Conclusion

In conclusion, the correct answer to the question is option C, battery and galvanometer. The resistance to be measured is connected between the two arms of the Wheatstone bridge, and the battery and galvanometer are connected to the two ends of the diamond. The Wheatstone bridge works on the principle of null deflection, and the resistance can be calculated using the formula mentioned above.