Some Natural Phenamenon

Charges can be detected by using

• a thermometer

• an electroscope

• a barometer

A lightning conductor usually has a rod made of

• copper

• glass

• pastic

A negatively-charged object will attract

• only negatively charged objects

• only positively charged objects

• both positively charged objects and neutral objects

Static electricity is the electricity in which

• charges are in motion

• charges are at rest

• Both the options

Identify the Y shaped structure in the given figure

• Lightning rod

• Plastic rod

• Water pipe

Similar charges

• Attract each other

• Repel each other

• Neither attract nor repel

When two clouds having a huge amount of positive and negative charges approach each other, then

• the air becomes good conductor of electricity

• the air becomes bad conndcutor of electricity

• None of the above

Identify the figure which is not suitable during thunder storms

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Identify the figure which you are supposed do during lightning.

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Electric current is to be passed from one body to another. For this purpose the two bodies must be joined by cotton thread (c) copper wire (b) plastic string (d) rubber band

• Cotton thread

• rubber band

• copper wire