

Converting Power and Voltage Units
Interactive Video
•
Mathematics, Physics, Science
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What units are primarily discussed in the introduction of the video?
Speed and time
Temperature and pressure
Power and voltage
Length and area
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert 5 dB to dBm?
Subtract 30 from the dB value
Multiply the dB value by 10
Add 30 to the dB value
Divide the dB value by 2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of converting 1 watt to milliwatts?
1000 milliwatts
10 milliwatts
100 milliwatts
500 milliwatts
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to convert watts to dB?
dB = 20 * log10(voltage)
dB = 10 * log10(power/reference power)
dB = log10(power) + 30
dB = power * 10
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the reference power used when converting watts to dB?
1 milliwatt
1 watt
100 watts
10 watts
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert 5 dB to watts?
Add 30 and multiply by 10
Subtract 30 and divide by 2
Use the formula 10^(dB/10)
Multiply by 10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the reference power when converting milliwatts to dBm?
1 watt
100 milliwatts
10 watts
1 milliwatt
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