Q3. A radio signal has an output power of 10 milliwatts (mW). What is the power level in dBm?
A. 2.5 dBm
B. 25 dBm
C. 10 dBm
D. 250 dBm
Correct Answer: C. 10 dBm
Explanation:
To calculate power in dBm, use the formula:
dBm = 10 * log(P / 1 mW)
Substitute P = 10 mW into the formula:
dBm = 10 * log(25 / 1) = 10 * log(10) = 10 * 1 = 10dBm
So, the power level is 10 dBm.
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