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T0A12

Which of the following precautions should be taken when measuring high voltages with a voltmeter?

Select	Answer
A	Ensure that the voltmeter and leads are rated for use at the voltages to be measured
B	Ensure that the circuit is grounded through the voltmeter
C	Ensure that the voltmeter has very low impedance
D	Ensure that the voltmeter is set to the correct frequency

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