Quick pretest

Which electrical quantity is being measured in the diagram provided?

• Current

• Voltage

• Resistance

• Power

What is the value of resistor R2 if the total resistance measured between the top and bottom points is 50 ohms and the value of R1 is 85 ohms?

• 130 ohms

• 145 ohms

• 170 ohms

• 34 ohms

What is the power dissipated by resistor R2 in the circuit shown here? Round your answer to the nearest whole Watt and do not put the unit.

• 72

• 48

• 36

• 24

In all circuits, the total Power is equal to:

• Voltage multiplied by Current

• Current divided by Resistance

• Resistance multiplied by Current

• Voltage plus Current

Which of the following statements is true regarding series circuits?

• The total resistance is equal to the sum of individual resistances

• The current varies in different parts of the circuit

• The voltage across each component is the same

• The total capacitance is the sum of individual capacitances

A solenoid converts electrical energy and magnetism into:

• Light

• Heat

• Mechanical motion

• Chemical energy

What is the power dissipated by resistor R2 in the circuit shown here?

• 0.81 Watts

• 0.09 Watts

• 0.5 Watts

• 1.2 Watts

Is a 5-W, 6000-Ω resistor operating within its power rating if it has a current flow of 0.03A through it?

• Yes, because the power dissipated is less than 5 Watts

• No, because the power dissipated exceeds 5 Watts

• Yes, because the power dissipated is exactly 5 Watts

• No, because the current is too high for the resistor

What is the total circuit voltage (V1) of the circuit below if the current is 3mA?

• 9 Volts

• 18 Volts

• 27 Volts

• 36 Volts

What is the total resistance in the circuit diagram provided?

• 232 ohms

• 262 ohms

• 282 ohms

• 242 ohms