Some Natural Phenomena

An electroscope is a device which is used to find if an object is

• charged

• magnetic

• free of cracks

• Hot

When a glass rod is rubbed with a piece of silk cloth the rod

• becomes positively charged while the cloth has a negative charge.

• and the cloth both acquire positive charge.

• and the cloth both acquire negative charge.

• becomes negatively charged while the cloth has a positive charge.

Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:

• they may repel

• they may attract

• they may attract or repel depending on the type of charges they carry

• there will be no effect

What is Natural Phenomena?

• Changes that occur in the body.

• Changes that occur in nature without direct human intervention.

• Are those take a long time to regenerate.

• Changes that occur in nature with direct human intervention.

If the two charges represented in the figure were brought near each other, they would

• attract each other.
• repel each other.
• cause static discharge.
• have no affect on each other

Walking across a carpet is an example of charge being transferred by

• friction.
• induction.
• contact.
• static electricity

Method of charging an object by allowing electric charge to flow by direct contact from one object to another object.

• friction
• conduction
• electric force
• induction

Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will pop.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will repel each other.

Choose the substance that will become negatively charged when rubbed with silk:   

• glass
• calcium
• ebonite
• fur

What is nature of the electric charges by rubbing?

• Positive

• Negative

• Static

• Neutral