In a series circuit, the voltmeter must be connected in parallel with the resistor or component that you want to measure the voltage across. This means that the positive lead of the voltmeter should be connected to one end of the resistor, and the negative lead to the other end.
No, a voltmeter must be placed in parallel with the component you want to measure the voltage across. Placing it anywhere else in the circuit will give incorrect readings.
In a parallel circuit, the voltmeter should be connected in the same way as in a series circuit - in parallel with the component you want to measure the voltage across. This means connecting the positive lead to one end of the component, and the negative lead to the other end.
Yes, a voltmeter can be used to measure the voltage of a live circuit. However, it is important to follow safety precautions and ensure that the voltmeter has an appropriate range and is connected correctly in the circuit.
If a voltmeter is connected in reverse polarity, meaning the positive lead is connected to the negative end of a component, it will give a negative reading. This is because the voltmeter is essentially measuring the voltage difference between its two leads, and by reversing the polarity, the difference becomes negative.