An ammeter is connected in series with the circuit because the purpose of the ammeter is to measure the current through the circuit. Since the ammeter is a low impedance device, connecting it in parallel with the circuit would cause a short circuit, damaging the ammeter and/or the circuit.
1) It should be connected in series, so that maximum current can pass through it, for accurate measurement of current. 2) its resistance is very low, if it is connected in parallel in a circuit, it will by the current, and current can not be measured accurately.
if you do not connect the ammeter in series you will shunt the load, basically excluding the resistive element of the circuit.
The Voltmeter is used to measure the electrical potential difference between two points...
so it's no use to connect it in Series , because the electrical potential difference between two points at the same line is zero ==> the readings will always be zero.
so it's no use to connect it in Series , because the electrical potential difference between two points at the same line is zero ==> the readings will always be zero.
The Ammeter is used to measure the electric current in a circuit...
so it's no use to connect it in Parallel , because you want to know the current flowing in this wire.
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