Question

What will happen when an ammeter and voltmeter are connected in parallel and series?

Accepted Answer

Ammeter is connected in series always. Ammeter has a very low resistance. So the current which we measure in a circuit using the ammeter will be the same as if the ammeter is not there. So connecting an ammeter in parallel with a circuit means that you just short-circuited the circuit you were intending to measure. An ammeter has a very low internal resistance. So, if it is connected in parallel with a load, it will short out that load in resulting a high current flowing through the ammeter that may severely damage the ammeter (and possibly harm the user), although most are fitted with fuses to protect them. If the ammeter can withstand the high flow of the current, the ammeter shows the current flowing in the short-circuited electric circuit.

A voltmeter is used to measure the potential difference across two points in an electrical circuit. The voltmeter is connected in parallel across the circuit element (resistance) so that its inclusion in the circuit has a negligible effect on total resistance and the current flowing in the circuit A voltmeter has high resistance, if connected in series it will increase of circuit and reduce the current in the circuit.

What will happen when an ammeter and voltmeter are connected in parallel and series?

Important Questions on Current Electricity

Learn and Prepare for any exam you want !