Question

An appliance has three wires of colours red, black and green, and is connected to a three pin plug. The thickest pin is connected to which wire?

• A. Red
• B. Black
• C. Green
• D. All pins have the same thickness

Answer 1

The correct option is C

Green

The thickest pin in the plug corresponds to the earth pin. Now, the earth wire is connected to the earth pin. And the colour of the earth wire is green. Hence, green wire is connected to the thickest pin.