# How do you measure 12V with a multimeter?

## How do you measure 12V with a multimeter?

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.

## When measuring amperage with a multimeter the leads of the meter must be placed where in the circuit?

Answer: To measure the total current, the ammeter must be placed at position 1, as all the current in the circuit must pass through this wire, and ammeters are always connected in series.

How do you calculate amperage?

Calculating Amperage A simple formula for calculating amps is to take the watts and divide that by the volts. So, for instance, if the wattage of the lighting fixture you’re working with is 60 and the volts are 12, divide 60 by 12 and you will get five, which are the amps.

How do you measure high amperage on a multimeter?

A multimeter configured to measure current on the high amperage setting (red probe in the “A” socket, rotary dial turned to the A setting) Note that whether either of the two amperage sockets have an internal fuse varies meter to meter. On some meters, both are fused. On others, only the high amperage (10A) socket is fused.

### How do you measure the current in a car battery?

To do this, the meter must be placed between the negative battery terminal and the body of the car, as you need to measure all of the current in all of the circuits.

### How do you test a car battery with a 10 amp meter?

Configure the meter to measure the current at the high-amperage (10A) setting. Turn the disconnect switch so that it connects the battery to ground and allows current to flow. Turn off everything in the car—lights, radio, USB chargers, everything. Connect the meter across the battery switch (between the negative post and ground).