Resistors and Circuits

What is the equivalent or total resistance (R_e) across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

Which resistor will prevent the most current flow?

• 1 ohm
• 100 ohms
• 1000 ohms
• 0.5k ohms

How does resistance affect current?

• less resistance - less current
• more resistance - less current
• more resistance - more current
• resistance does not affect current

Which one, top or bottom, offers more resistance?

• top
• bottom
• neither

Which one, top or bottom, will give off more heat?

• top
• bottom
• neither

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Power  = ?

• Current
• Voltage
• Current X Voltage
• Current / Voltage

What happens to the current in a parallel circuit?

• It is the same before the path splits and after the paths rejoin
• It is divided in two
• It is doubled
• It increases when the paths split

Comparing branches in a parallel circuit:

• the voltage is the same in all branches
• the voltage depends on the resistance
• the resistance depends on the voltage
• the resistance is the same in all branches

Comparing series vs parallel circuits:

• Series: voltage changes, current is constant
• Series: Current changes, voltage is constant
• Parallel: both voltage AND current change
• Parallel: neither voltage nor current change

Increasing the number of branches in a parallel circuit ...

• ... increases the total resistance
• ... decreases the total resistance
• ... makes no difference to the total resistance