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A lightning arrester must have the following property.

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in Physics – Class 12 by (135k points)
A lightning arrester must have the following property.

(a) Discontinuity

(b) Poor conductivity

(c) Needle end

(d) Low melting point

I had been asked this question at a job interview.

I need to ask this question from Basic Properties of Electric Charge topic in section Charges and Fields of Physics – Class 12

1 Answer

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Best answer
Correct choice is (c) Needle end

Explanation: Needle end can arrest the lightning easily. Besides, the device must provide a continuous path to electricity so that current passes to ground. It must have a high melting point else it will meltdown due to the heat generated during carrying lightning current.

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