Review-Circuits

The diagram below shows a parallel circuit.Ammeter A measures the current supplied by the 110-volt source. What is the current being measured by ammeter A?

• 2.75A
• 27.5A
• 40A
• 4A

The circuit diagram below represents four resistors connected to a 24-volt source. What is the total current in the circuit?

• 24A
• 12A
• 0.5A
• 1A

In the circuit shown below, voltmeter 2 (V2) reads 80 volts. What is the reading of voltmeter 1 (V1)?

• 320V
• 12V
• 32V
• 80V

The diagram below shows two resistors connected in series to a 20.-volt battery. If the current through the 25.0-ohm resistor is 0.5 ampere, what is the current through the 15.0-ohm resistor?

• 20A
• 0.5A
• 2A
• 40A

A 12.0-volt battery is connected to a 4.0-ohm resistor and a 5.0-ohm resistor as shown in the diagram below. What is the current in the 5.0-ohm resistor?

• 9A
• 12A
• 1.3A
• 0.75A

The circuit diagram below shows two resistors connected to a 24-volt source of potential difference. What is the total resistance of the circuit?

• 1.3 Ohms
• 0.75 Ohms
• 6 Ohms
• 4 Ohms

An electric circuit is represented in the diagram below. Which switches must be closed to produce a current in conductor AB?

• Switch 1
• Switches 1, 2, 3
• Switches 2, 3
• Switches 1, 4

In which of the following circuits would current flow through resistor R1 but not through resistor R2 while switch S is open?

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Which of the following diagrams represents resistances connected in series?

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A circuit diagram is shown below. What is the voltage used by the 3.0-ohm resistor?

• 9V
• 4.5V
• 1V
• 3V