Question 1

Figure 4-1
-Given the circuit in Figure 4-1, the power consumed by the lamp is:

Accepted Answer

A)  220 W 
B)  14 W 
C)  144 W 
D)  100 W 
A)  220 W 
B)  14 W 
C)  144 W 
D)  100 W

Question 2

How many Watts are used when 6000 Joules of energy are consumed in 5 hours?

Accepted Answer

A)  6000 W 
B)  1200 W 
C)  0.33 W 
D)  200 W 
A)  6000 W 
B)  1200 W 
C)  0.33 W 
D)  200 W

Question 3

For a circuit that contains a 50 V power supply and a 100 Ω resistor, what power rating should be assigned to the resistor?

Accepted Answer

A)  250 W 
B)  25 W 
C)  2.5 W 
D)  125W 
A)  250 W 
B)  25 W 
C)  2.5 W 
D)  125W

Question 4

If 50 Joules are used in ten seconds, the power will be 500 Watts.

Accepted Answer

A) True 
 B)False

Question 5

What value of power is dissipated by a 5 kΩ resistor, when 30 nA flows through it?

Accepted Answer

A)  6.67 mW 
B)  150 W 
C)  6 nW 
D)  4.5 pW 
A)  6.67 mW 
B)  150 W 
C)  6 nW 
D)  4.5 pW

Question 6

Power is the rate at which energy is used.

Accepted Answer

A) True 
 B)False

Question 7

A 1 kW load that operates for 1 hour consumes the same amount of energy as a 100 W load that operates for 10 hours.

Accepted Answer

A) True 
 B)False

Question 8

Voltage forces electrical energy through a circuit.

Accepted Answer

A) True 
 B)False

Question 9

How many joules of energy will a 10 W lamp dissipate in one minute?

Accepted Answer

A)  60 joules 
B)  600 joules 
C)  10 joules 
D)  3600 joules 
A)  60 joules 
B)  600 joules 
C)  10 joules 
D)  3600 joules

Figure 4-1 -Given the circuit in Figure 4-1, the power consumed by the lamp is:

How many Watts are used when 6000 Joules of energy are consumed in 5 hours?

For a circuit that contains a 50 V power supply and a 100 Ω resistor, what power rating should be assigned to the resistor?

If 50 Joules are used in ten seconds, the power will be 500 Watts.

What value of power is dissipated by a 5 kΩ resistor, when 30 nA flows through it?

Power is the rate at which energy is used.

A 1 kW load that operates for 1 hour consumes the same amount of energy as a 100 W load that operates for 10 hours.

Voltage forces electrical energy through a circuit.

How many joules of energy will a 10 W lamp dissipate in one minute?

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

Rc Circuits

Rl Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters

Exam 4: Energy and Power

Figure 4-1 -Given the circuit in Figure 4-1, the power consumed by the lamp is:

How many Watts are used when 6000 Joules of energy are consumed in 5 hours?

For a circuit that contains a 50 V power supply and a 100 Ω resistor, what power rating should be assigned to the resistor?

If 50 Joules are used in ten seconds, the power will be 500 Watts.

What value of power is dissipated by a 5 kΩ resistor, when 30 nA flows through it?

Power is the rate at which energy is used.

A 1 kW load that operates for 1 hour consumes the same amount of energy as a 100 W load that operates for 10 hours.

Voltage forces electrical energy through a circuit.

How many joules of energy will a 10 W lamp dissipate in one minute?

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

Rc Circuits

Rl Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters