Circuits Practice

Rank the currents in the circuits

• 1 > 2 > 3

• 2 > 3 > 1

• 2 > 1 > 3

• 3 > 2 > 1

Tags

NGSS.HS-PS2-5

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. The largest potential difference is across which resistor?

• 10 ohm

• 20 ohm

• 30 ohm

• 60 ohm

A battery, a switch S, and four identical lightbulbs A, B, C, and D are arranged in a circuit as shown. How does the current in lightbulb A change, if at all, when the switch is closed?

• It does not change

• It increases

• It decreases

• Cannot be determined

In the circuit shown, the current through the ammeter is 2 A. What is the current through the resistor of unknown resistance R ?

• 6 A

• 4 A

• 3 A

• The current cannot be determined without knowing the value of R.

Which bulb is on the longest? 

• A

• C

• D

• E    

Tags

NGSS.HS-PS3-1

In the circuit above, the current in the 8Ω resistor is 4A toward the top of the page and the current in the 3Ω resistor is 8A toward the bottom of the page. What is the current in each of the 5 Ω resistors?

• 12 A toward the top of the page

• 2A toward the top of the page

• 4A toward the top of the page

• 4A toward the bottom of the page

What is the direction of the current in resistor R2?

• Up

• Down

• No Current

• Left

A voltmeter and ammeter are connected incorrectly as shown. What is the measurement of both?

• Voltmeter = 6 V

  Ammeter = 0 A

• Voltmeter = 0 V

  Ammeter = 0.5 A

• Voltmeter = 0 V

  Ammeter = 1 A

• Voltmeter = 6 V

  Ammeter = 0.5 A

At what rate is thermal energy generated in the 30 Ω resistor?

• 20 W

• 27 W

• 60 W

• 13 W

Tags

NGSS.HS-PS3-1