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Why a copper rod cannot be charged by friction, if held by hand?
Explain the process of electric discharge.
A crackling sound is heard while taking off sweater during winters. Explain the reason behind this.
What do you mean by lightning conductor?
What is lightning? How does lightning strike?
Suppose you are outside your home and an earthquake strikes. What precaution would you take to protect yourself?
Explain earthing.
How an electroscope can be charged through conduction?
Why does a plastic comb rubbed with dry hair attract tiny pieces of paper?
What do you mean by earthing? What is the purpose of providing it in buildings?
Suppose you are at home and an earthquake strikes. What precaution would you take to protect yourself?