Question

how are voltmeter and ammeter connected in an electric circuit? state the reason for their connections in the circuit ?

Answer 1

A voltmeter is connected in parallel with a device for which we want to measure the potential difference across its terminals.  This is because the potential difference is same when the devices are connected in parallel.

An ammeter is connected in series with a device for which we want to measure the current passing through it.  This is because electric current is same through the devices connected in series.

Answer 2

Ammeter:-

An ammeter is just a converted Galvanometer and measures the current flowing through the circuit by showing proportional deflection. An ammeter is formed by connecting a Galvanometer with a low resistance in parallel.

$\bigstar$So the Ammeter is connected in series with the circuit elements and measures the current flow in a circuit.

Voltmeter:-

A Voltmeter is also a converted Galvanometer which measures the amount of Voltage (or) in other words the potential difference accross two points in a circuit. A voltmeter is formed by connecting a Galvanometer in series with a high resistance.

$\bigstar$So the Voltmeter is attached in parallel in a circuit and measures the voltage in a circuit.