Electric Charge and Current

Calculate current if a charge of 10 Coulombs flows past a point in 5 seconds

• 2 Amps

• 50 Amps

• 0.5 Amps

Calculate the charge that passes a point in 20 seconds if 500mA flows for this time.

• 10 000 Coulombs

• 25 Coulombs

• 10 Coulombs

• 0.025 Coulombs

What is current measured in?

• Ω (Ohms)

• V (Volts)

• A (Amps)

• W (Watts)

Electrons are _____________ charged

• negative

• positive

• neutral

Tags

NGSS.MS-PS2-3

Which type of charge is pictured?

• neutral

• positive

• negative

Tags

NGSS.MS-PS2-3

Which type of charge (positive, negative, or neutral) is pictured? How do you know?

Tags

NGSS.MS-PS2-3

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• positive charge.

• negative charge.

• neutral charge

• charge at all

Tags

NGSS.MS-PS2-3

The girl's hair and the comb are attracting  one another.  The hair and the comb have

• opposite charges

• like charges

Tags

NGSS.MS-PS2-3

Circuits often include a _____________ to control the flow of current.

• switch

• conductor

• voltage

• current

What is the resistance of a light bulb that has 3 A flow through when it is placed across 9 V?

• 1/3 ohms

• 3 ohms

• 27 ohms

• 9 ohms