Measuring Potential Difference and Short Time Interval

Y-gain is set at 2.0 V cm^–1.

Peak Voltage, V_P =____

[Answer must be accompanied with SI unit].

The time-base gain is set at x 0.01 s cm^–1.

Calculate the period of the pulse.

[Answer must be accompanied with SI unit].

The time-base gain is set at x 0.05 s cm^–1.

Calculate the frequency of the pulse.

[Answer must be accompanied with SI unit].

Diagram 1 shows the oscilloscope trace produced by an input of 2 V at a frequency of 50 Hz.

Diagram 2 shows the trace from a new input on the same oscilloscope.

What is the value of the new input ?

• 1 V at 50 Hz

• 2 V at 50 Hz

• 2 V at 100 Hz

• 4 V at 50 Hz

A d.c. dynamo is connected to the Y-plate of a cathode ray oscilloscope, CRO. Which of the following traces is seen on the screen of CRO when the time base is switched off?

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