Circuits

The picture shows an electrical circuit. This circuit is a series circuit because:

• It has 3 light bulbs.

• The same current flows through all three light bulbs.

• It uses a single battery.

• The electrical current has more than one path to flow through

How many lightbulbs will work if there is a break in the circuit at POINT A?

• 1

• 2

• 3

• NONE

If the current through the battery was 10A in this diagram. What would the current through each identical bulb be?

• 10A
• 5A
• 20A
• 0A

Tags

NGSS.HS-PS3-5

The equivalent resistance in this circuit is

• 100 ohms

• 450 ohms

• 400 ohms

• 30 ohms

The current going through the 90 ohm resistor is...

(Hint: Know Kirchhoff's Loop Rule and use Ohm's Law)

• 10 amps

• 0.1 amps

• 0.2 amps

• 9 amps

This circuit won't work. What essential part is missing from this circuit?

• resistance
• source of electric current
• conductor
• ammeter

This is the symbol for a _____?

• switch
• light 
• battery
• wires

Tags

NGSS.HS-PS2-5

A 2.0-ohm resistor and a 4.0-ohm resistor are connected in series with a 12-volt battery. If the current through the 2.0-ohm resistor is 2.0 amperes, the current through the 4.0-ohm resistor is

• 1.0 A

• 2.0 A

• 3.0 A

• 4.0 A

Where should an ammeter be located to correctly measure the total current and where should a voltmeter be located to correctly measure the total voltage?

• ammeter at 3 and voltmeter at 4

• ammeter at 1 and voltmeter at 4

• ammeter at 2 and voltmeter at 3

• ammeter at 1 and voltmeter at 2

The total current through this circuit is...

(Hint: Find equivalent resistance then use Ohm's Law)

• 0.02 amps

• 0.09 amps

• 50 amps

• 9 amps