Correct option is B
Explanation:
The types of earthing systems include:
1.
Wire Earthing: This involves using a wire, typically made of copper, which is connected to the earth electrode and buried in the ground to provide a low-resistance path to the earth.
2.
Pipe Earthing: In this method, a galvanized steel pipe is buried vertically into the ground, and the electrical connection is made to this pipe. The pipe provides a good conductive path to the earth.
3.
Plate Earthing: In this method, a plate made of copper or galvanized iron is buried in the ground at a specific depth, and the electrical connection is made to this plate to ensure an effective earthing system.
Since all the options provided are types of earthing systems, the correct answer is (b) All of the options.
