Question

What is the difference between D.C Voltmeter and A.C Voltmeter

Answer 1

Explanation:

The DC voltmeter measures the DC voltage but the AC voltmeter measures the AC voltage. The DC voltmeter measures the peak value of DC voltage but the AC voltmeter measures the RMS value of the AC voltage.

Answer 2

The key difference between the two Voltmeters is the type of voltage it measures i.e. AC or DC.

DC Voltmeter vs AC Voltmeter :

• There are two types of Power AC and DC. Similarly, there are corresponding types of different Voltmeneters.
• The DC Voltmeter is used to measure the voltage of a DC Power Source whereas AC Voltmeter measures the voltage of the AC Power Source.
• Another difference is that a DC voltmeter measures the voltage as the peak value of the DC voltage whereas the AC voltmeter measures the RMS value of the AC voltage.
• The working principles of both voltmeters are also different.
• A DC voltmeter selects a voltage, attenuates the rest, and then amplifies the selected voltage.
• On the other hand, an AC voltmeter rectifies the voltage before amplifying it.
• The DC voltmeters are very sensitive and thus highly accurate.AC Voltmeters have non-linear and thus are not accurate at lower voltages.

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