Science
Write T against true and F against false in the following statements.
(a) Like charges attract each other. (T/F)
(b) A charged glass rod attracts a charged plastic straw. (T/F)
(c) Lightning conductors cannot protect a building from lightning. (T/F)
(d) Earthquakes can be predicted in advance. (T/F)
Answer
(a) Like charges attract each other. — False
Reason — Like charges repel each other.
(b) A charged glass rod attracts a charged plastic straw. — True
(c) Lightning conductors cannot protect a building from lightning. — False
Reason — Lightning conductors protect a building from lightning.
(d) Earthquakes can be predicted in advance. — False
Reason — Earthquakes cannot be predicted in advance.
Related Questions
Which of the following cannot be charged easily by friction?
- A plastic scale
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- An inflated balloon
- A woollen cloth.
When a glass rod is rubbed with a piece of silk cloth, the rod
- and the cloth both acquire a positive charge.
- becomes positively charged while the cloth has a negative charge.
- and the cloth both acquire a negative charge.
- becomes negatively charged while the cloth has a positive charge.
Sometimes, a crackling sound is heard while taking off a sweater during winter. Explain.
Explain why a charged body loses its charge if we touch it with our hand.