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State two advantages of using a Cathode Ray Oscilloscope (C.R.O) as a voltmeter over the ordinary voltmeter.
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Jul 8, 2021
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Physics Form 4
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anonymous
State two advantages of using a Cathode Ray Oscilloscope (C.R.O) as a voltmeter over the ordinary voltmeter.
photoelectric effect
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Jul 8, 2021
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Has no coil to burn out
Has instantaneous response.
Has nearly infinite resistance, therefore draws very little current.
Can measure both AC and DC voltages.
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