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Current Electricity — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
Question
For two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both A and R are true, and R is the correct explanation of A.
  2. Both A and R are true, but R is not the correct explanation of A.
  3. A is true, but R is false.
  4. A is false, and R is also false.
Assertion: A person touching a high power line gets stuck with the line.
Reason: The current carrying wire attracts the man towards it.
✓

Answer

  1. A is false, and R is also false.
Explanation:
Because there is no special attractive force that keeps a person stuck with a high power line. The actual reason is that a current of the order of 0.05A or even less is enough to bring disorder in our nervous system. As a result of it, the affected person may lose temporarily his ability to control his nervous system to get himself free from the high power tine.

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