Why voltmeter is placed in parallel and ammeter in series in the DC circuit?
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Voltmeters are connected in parallel with whatever device's voltage is to be measured. A parallel connection is used because objects in parallel experience the same potential difference. ... An ammeter (A) is placed in series to measure current. All of the current in this circuit flows through the meter.
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A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit. An ammeter is placed in series to get the full current flowing through a branch and must have a small resistance to limit its effect on the circuit.
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