What happens if you select a voltage setting that is too low for the voltage you are trying to measure?

What happens if you select a voltage setting that is too low for the voltage you’re trying to measure? Nothing bad. The meter will simply display a 1. This is the meter trying to tell you that it is overloaded or out-of-range.

What causes the voltage to read lower than normal?

The “voltage drop” or the amount that voltage lowers as it goes through a load is an indication or measure of how much electrical energy was used when it was converted into another form of energy (light, heat, or electromagnetic movement).

Why do we need to extend the range of an voltmeter What is the relation between the resistance to be connected to extend the range of meter and its internal resistance?

Multipliers: The range of voltmeter can be extended by connecting a high resistance, called multiplier in series with the voltmeter (Figure 2(b)). The multiplier limits the voltage drop so that it does not exceed the value of full scale and thus prevents from being damaged.

What happens if you measure AC voltage with DC multimeter?

AC will display as zero voltage on a DC setting, regardless of the polarity. Reversing the leads and still reading zero will distinguish this from DC with reversed polarity if the meter displays zero for reversed polarity DC. Measuring DC on an AC setting will depend on the meter.

Why do we have to be sure in setting the correct range setting of the multi tester when doing measurements?

Multimeters are generally not autoranging. You have to set the multimeter to a range that it can measure. For example, 2V measures voltages up to 2 volts, and 20V measures voltages up to 20 volts. So if you’ve measuring a 12V battery, use the 20V setting.

What would happen if you placed a voltmeter in series with a component to be tested?

What would happen if you placed a voltmeter in series with a component to be tested? The voltmeter would put a large resistance in series with the circuit, significantly changing the circuit. It would probably give a reading, but it would be meaningless.

What is the effect of voltage drop?

Excessive voltage drop in a circuit can cause lights to flicker or burn dimly, heaters to heat poorly, and motors to run hotter than normal and burn out. This condition causes the load to work harder with less voltage pushing the current.

Why do we need to extend the range of voltmeter?

Now let us learn about the extension of the measuring range of voltmeters. Due to difficulty in measuring high voltages with normal voltmeters, it is, therefore, necessary to bring those high values to normal values that can be measurable by voltmeters. This process is called the extension of range of voltmeter.

How can you extend the range of a voltmeter explain briefly?

To increase the ranges of a voltmeter, we need to connect a high series of multiplier resistance in series with voltmeters. We can extend the range of ammeter by keeping a shunt resistance. As the two resistances, Rm and Rsh are in parallel, the voltage drop across the resistance is equal.