Q1. [1]
Assertion (A) : In the common domestic circuits the earth wire is connected to a metallic plate buried deep inside the earth.
Reason (R) : Earth wire ensures that any leakage of current to the metallic body of the appliance keeps its potential to that of the earth, so the user may not get a severe electric shock.
- (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- (B) Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of the Assertion (A).
- (C) Assertion (A) is true, but Reason (R) is false.
- (D) Assertion (A) is false, but Reason (R) is true.
Previously asked in CBSE board exam
2025 31/6/1 Q19
Generated by claude-sonnet-4-6 · 2026-06-15 06:45 · grounding rag
Model Answer
(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Explanation
The earth wire is indeed connected to a metallic plate buried in the earth (A is true). Its purpose is to keep the potential of the appliance body at earth potential (zero), so any leakage current flows safely into the ground instead of through the user — this correctly explains why (A) is true, making (A) the right option.
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