Electricity and Electrostatic Charge

Choose TWO objects that negatively charged when rubbed.

• Nylon

• Polythene

• Glass

• Animal fur

Tags

NGSS.MS-PS2-3

A Van de Graff generator is applied to ________________________

• produce same charges

• produce different charges

• generate electrical charges

Choose TWO correct statements how lightning happened.

• The upper part cloud is negatively charged

• The ground is negatively charged

• The friction of air and cloud produce electric charges

• Force of repulsion occur between the ground and cloud

Tags

NGSS.MS-PS2-5

The charge of an electron is 

• positive. 

• negative. 

• Electrons have no charge

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How can it be explained that someone's hair can stick to a balloon?

• There is electrostatic charges.

• There is too much dust in the air.

• The person needs to wash his hair.

Tags

NGSS.MS-PS2-3

When a balloon is rubbed on clothes it acquires a charge by ___________

• Induction

• reduction

• friction 

• concuction

Which of the following instrument can be used to detect electric charges

• Electroscope

• Electromagnet

• Microscope

• Telescope

A plastic rod rubbed with a piece of woollen cloth will become negatively charged because

• the plastic rod received electrons from the woollen cloth

• the protons in the plastic rod has been transferred to the woollen cloth

• there are same numbers of protons and neutrons in the woollen cloth

• the free electrons from the plastic rod has been neutralised by the protons from the woollen cloth

Two like charges

•  neutralize each other.

• repel each other. 

• must be neutrons. 

• attract each other.

Tags

NGSS.MS-PS2-3

An atom loses an electron.  What type of charge does it have now?

• positive

• negative