The correct answer is: A. More
A VTVM (vacuum tube voltmeter) is a type of voltmeter that uses vacuum tubes to amplify the input signal. This allows it to have a much higher input resistance than a multimeter, which is a type of voltmeter that does not use vacuum tubes.
The input resistance of a voltmeter is the resistance that it presents to the circuit being measured. This resistance can affect the measurement, as it can cause a voltage drop across the circuit. The higher the input resistance, the less the voltage drop will be, and the more accurate the measurement will be.
A VTVM has a much higher input resistance than a multimeter, which means that it will cause less of a voltage drop across the circuit being measured. This makes it a more accurate instrument for measuring voltage.
Here is a brief explanation of each option:
- Option A: More. A VTVM has a much higher input resistance than a multimeter. This means that it will cause less of a voltage drop across the circuit being measured, which makes it a more accurate instrument for measuring voltage.
- Option B: Less. This is incorrect, as a VTVM has a much higher input resistance than a multimeter.
- Option C: Same. This is incorrect, as a VTVM has a much higher input resistance than a multimeter.
- Option D: None of the above. This is incorrect, as the correct answer is A.