386 Physics Laboratory ManwiLoy 5. A typical student oscilloscope on its least s

Question

386 Physics Laboratory ManwiLoy 5. A typical student oscilloscope on its least sensitive calibrated scale can display a voltage up to a maximum of approximately (a) 1V (b) 5V (c) 20V (d) 200v 6. A typical student oscilloscope on its most sensitive calibrated scale can display a voltage down to a minimum of approximately (a) 1 mV (b) 5mV (c) 20V (d) 200 mV 7. A sawtooth wave with a period of 100ms is applied to an oscilloscope with a screen 10cm wide What time is represented by 1 cm on the screen

Explanation / Answer

5. The correct option is (d) 200V

The oscilloscope has a finite range of display. When the voltage is high, the resolution of the voltage per unit of screen length increases. This results in least sensitivity at high voltage range (1mV).

6. The correct option is (a) 1mV

The oscilloscope has a finite range of display. When the voltage is high, the resolution of the voltage per unit of screen length increases. This results in highest sensitivity at low voltage range (200V).

7. Assuming the one full wavelength of saw tooth wave is covering the full time range of the oscilloscope, the time represented will be 100ms * 1cm / 10cm = 10 ms.

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