Explain Difference Between Two Wire and Three Wire

Each of the switches have 3 terminals. One is common and the other two are output.

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On the other hand another hot wire connects the S2 common terminal and the bulb.

. All measurable quantities are called physical quantities such as length mass time and temperature. In 2 way switching the live wire connects with the common terminal of S1. Explain with examples that science is based on physical quantities which consist of numerical magnitude and a unit.

Now we have two types of wires coming to the switches. One is its numerical magnitude and the other is the unit in which it. A physical quantity possesses at least two characteristics in common.

The neutral and the hot wire.

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