Why ammeter will burn out if connected in parallel in a electric circuit.plzzz answer fast
Answers
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. It should be connected in series, so that maximum current can pass through it, for accurate measurement of current. Moreover 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.
Voltage difference means difference in the electrical potential between two points. So, when you use voltmeter, you need to provide it 2 different points (which are usually, before and after a resistance wire) Thus, the voltmeter calculates the difference in electrical potential between those 2 points.
If you connect the voltmeter in series, there are no 2 different points as you connect it on the same wire with same potential difference (potential difference is same because no additional resistance is present in it).
An ammeter is likely to burn if connected in parallel because ammeter is a low resistance device and when connected in parallel, the resistance of the circuit reduces considerably. Hence, a large current flows in the circuit which may lead to burning of a circuit