Wheatstone bridge is an arrangement of _________ resistors used for accurate measurement of resistance.

four

The correct answer is option 4. four.

Wheatstone bridge is an arrangement of four resistors.

The Wheatstone bridge is a circuit configuration consisting of four resistors connected in a diamond shape. It is commonly used for measuring an unknown resistance by comparing it with known resistances. The arrangement of four resistors allows for accurate measurement of resistance when balanced conditions are achieved in the bridge circuit.