how is current measured?

Answer 1

You've received a lot of information, and it is all correct. Some responders probably told you more than you needed.

Current is measured in amperes (amps for short).
An ampere equals one coulomb per second, where coulomb is an amount of charge. We measure the rate at which the charge is passing a given point, and if one coulomb goes past the point each second, then the current is one amp.

The meter that measures amps is called an ammeter. (There is no p in the name.) As one responder pointed out, you have to make a break in the circuit and insert the ammeter. That way, the current goes through the meter and the meter is able to measure the amps.

Some other responders gave you formulas involving power, ohms, voltage, etc. These are all correct, and you might need them to CALCULATE amps. But if you're MEASURING amps, you shouldn't need these formulas.

Answer 2

To measure current the circuit must be BROKEN and the meter inserted in the break.

In this circuit the current will be the same no matter where the circuit is broken. If 1 amp is flowing then all meters will indicate 1 amp.

Observe the polarity of the leads when measuring DC
This is not necessary when measuring AC.

Select a high current range on the meter before switching the circuit on.
Switch down to a lower range if necessary to measure the current.
This protects the meter from damage due to excessive current, especially a moving coil one.

Answer 3

Current is the voltage divided by the resistance, also known as ohm's law. It's measured in amperage.

Answer 4

The unit of measurement is in columbs/seconds the result can be expressed in amps. Resistence is also a way to find the ampacity as well..Power(P)/voltage(E) will also give you ampacity. Voltage(E)/resistence(R) will also give you ampacity.Hope that helps...

Answer 5

Using an Amp meter.

Answer 6

electric contemporary is defined by way of fact the fee of pass with the pass of expenses, i.E. I = Q/t the placement, I = electric contemporary Q = fee flown in time 't' it particularly is measured in Amperes(A) whilst a cost of a million Coloumbs flows for a million 2d the present is comparable to a million Amp.

Answer 7

with an amp meter between the source and the load

Answer 8

Amps mainly.