Using a 10x probe, one complete cycle of a sine wave spans 1.7 blocks when the Sec/Div switch is set to 5 sec. The frequency of this sine wave is ____.
A) 8.5 Hz
B) 85 Hz
C) 117.65 mHz
D) 1.18 Hz

Question

Quizplus · Accepted Answer

The frequency of the sine wave can be calculated using the formula $f = \frac{1}{T}$, where $T$ is the period of the wave. Given that one complete cycle spans 1.7 blocks and each block represents 5 seconds (due to the Sec/Div setting), the total time for one cycle (the period) is $1.7 \times 5 = 8.5$ seconds. Therefore, the frequency is $f = \frac{1}{8.5} \approx 0.11765$ Hz, which is 117.65 mHz.

Using a 10x Probe, One Complete Cycle of a Sine