Electrostatics

They are two types of electric charges: positive charge and negative charge.

• True

• False

Which of the following instrument is used to detect static electric charges.

• Voltmeter

• Van de Graaff generator

• Ammeter

• Electroscope

Choose the correct reason why the hair stand and attracted to the balloon when the balloon is rubbed to the hair?

• Both balloon and hair are neutral

• Both balloon and hair are same charged

• The balloon is negatively charged and hair is neutral

• The balloon and hair are different charged

A glass rod becomes positively charged when it is rubbed with silk. This is because the glass rod

• gains protons

• loses protons

• gains electrons

• loses electrons

Tags

NGSS.MS-PS2-3

You walk across a shag carpet and become negatively charged. You became negatively charged because...

• Protons from your body traveled to the carpet and therefore you became negatively charged

• Protons from the carpet traveled to your body and therefore you became negatively charged

• Electrons from your body traveled to the carpet and therefore you became negatively charged

• Electrons from the carpet traveled to your body and therefore you became negatively charged.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When a negatively charged plastic rod is brought near the brass cap of the electroscope, what can be observed?

• The gold leaf collapses.

• The gold leaf diverges.

• The gold leaf diverges than collapses.

• The position of the gold leaf remains unchanged.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which picture(s) is/are example(s) for Electrostatics?

• B, C, D

• B, C

• A, D

• A, B, C

Tags

NGSS.MS-PS2-3

When a person randomly touches a metallic doorknob, he/she is prone to feel a short term electric shock. How can one effectively avoid this from happening?

• Touching other people before touching the doorknob.

• Touching a wooden surface before touching the doorknob.

• Rub both hands on the clothes before touching the doorknob.

Tags

NGSS.MS-PS2-3

Same or like charges ___________ each other.

• attract

• repel

Opposite charges ___________ each other.

• attract

• repel