electric Charge and Current

What is the opposition to the flow of current in a conductor?

• power
• resistance
• power
• potential difference

As the resistance of a circuit increases, the current will

• increase
• decrease
• stay the same

In schematic diagrams, currents are indicated using arrows. What do the arrows indicate?

• the direction of motion of the electrons
• the direction of the current vector
• the direction of motion of the charge carriers
• the direction that positive charge carriers would move

A 10-ohm resistor has a constant current.  If 1200 C of charge flow through it in 4 minutes what is the value of the current?

• 3.0 A
• 5.0 A
• 20 A 
• 120 A

Current is a measure of: 

• force that moves a charge past a point 
• resistance to the movement of a charge past a point 
• energy used to move a charge past a point 
• amount of charge that moves past a point per unit time 

Current has units: 

• kilowatt·hour 
• coulomb/second
• coulomb 
• volt

Tags

NGSS.HS-PS2-5

What is the symbol for Current

• C
• Q
• I
• A

Tags

NGSS.HS-PS2-5

What is the unit for Current

• C
• Q
• I
• A

What is the unit for Charge

• C
• Q
• I
• A

What is the unit for Potential difference (Volt)

• Q
• V
• I
• A