Discuss the measurement of voltage and current.
What will be an ideal response?
Alternating current and voltage can be measured using several different types of movements. These movements vary in their ability to meet the criteria expressed in the following questions:
1. Does the instrument scale indicate RMS or average values?
2. To what value of volts or amperes must the movement respond?
3. Is the calibration of the scale linear in the useful range, or are the numbers on the scale crowded together in some important region?
4. How accurate is the instrument?
5. How much does it cost?
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