Physics
Assertion (A) : Cotton and rubber are examples of insulators.
Reason (R) : These materials have a large number of free electrons and they offer less resistance to flow of current.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Current Electricity
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Answer
assertion is true but reason is false
Explanation
Assertion (A) is true because both cotton and rubber do not conduct electricity under normal conditions since they have almost no free electrons and offer a very high resistance to the flow of current so they are commonly used as insulating materials in electrical applications.
Reason (R) is false because they have almost no free electrons and offer a very high resistance to the flow of current.
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