Electricity Assessment

In which electric circuit would the voltmeter read 10 volts?

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The diagram below represents a 3.0-ohm resistor connected to a 12-volt battery. Meters X and Y are correctly connected in the circuit.

• X = 12 V and Y = 0.25 A

• X = 12 V and Y = 4.0 A

• X = 0.25 A and Y = 12 V

• X = 4.0 A and Y = 12 V

The diagrams represent four pieces of copper wire at 20.°C. For each piece of wire, ℓ represents a unit of length and A represents a unit of cross-sectional area. The piece of wire that has the greatest resistance is...

• Wire 1

• Wire 2

• Wire 3

• Wire 4

When only one lightbulb blows out, an entire string of decorative lights goes out. The lights in this string must be connected in

• parallel with one current pathway

• parallel with multiple pathways

• series with one current pathway

• series with multiple pathways

An MP3 player draws a current of 0.120 ampere from a 3.00-volt battery. What is the total charge that passes through the player in 900. seconds?

• 324 C

• 108 C

• 5.40 C

• 1.08 C

The circuit diagram below represents four resistors connected to a 12-volt source. What is the total current in the circuit?

• 0.50 A

• 2.0 A

• 8.6 A

• 24 A

In a simple electric circuit, a 24-ohm resistor is connected across a 6.0-volt battery. What is the current in the circuit?

• 1.0 A

• 0.25 A

• 140 A

• 4.0 A

In the electric circuit diagram below, possible locations of an ammeter and a voltmeter are indicated by circles 1, 2, 3, and 4. 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 1 and voltmeter at 4

• ammeter at 2 and voltmeter at 3

• ammeter at 3 and voltmeter at 4

• ammeter at 1 and voltmeter at 2

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

In the circuit diagram below, two 4.0-ohm resistors are connected to a 16-volt battery as shown. The rate at which electrical energy is expended in this circuit is

• 8 W

• 16 W

• 32 W

• 64 W

Tags

NGSS.HS-PS3-1