Connecting an ammeter in parallel subjects that ammeter to the full supply voltage. The shunt resistor is not designed to sustain that value of voltage and will burn out. Also, the clue is in the word 'shunt' (which means 'in parallel') which means that the coil will also burn out!
To increase the range of an ammeter, you connect a very low impedance resistor in parallel with the ammeter.
An ammeter is a low voltage voltmeter in parallel with a small resistance resistor. Current flow through the resistor creates a voltage drop across it which is then measured by the voltmeter.
decrease to half of its original value
That won't work. To convert an ammeter (a galvanometer is a very sensitive type of ammeter) you connect a high value resistor in series with it.
Connecting an ammeter in parallel subjects that ammeter to the full supply voltage. The shunt resistor is not designed to sustain that value of voltage and will burn out. Also, the clue is in the word 'shunt' (which means 'in parallel') which means that the coil will also burn out!
To increase the range of an ammeter, you connect a very low impedance resistor in parallel with the ammeter.
Connecting an ammeter in series with a resistor in a circuit will not affect the current through the resistor. The ammeter measures the current passing through it, so it becomes part of the circuit and simply measures the current flowing through the resistor without changing it.
if you want to find the current (in amperes) through the resistor then connect a ammeter in series with the resistor.
An ammeter is a low voltage voltmeter in parallel with a small resistance resistor. Current flow through the resistor creates a voltage drop across it which is then measured by the voltmeter.
decrease to half of its original value
By attaching a resistance in parallel connection with the galvanometer. Or when a low resistor connected in parallel with galvanometer ,the galvanometer is converted in ammeter. and the resistor is called shunt resistance.
If the resistor is removed from the circuit, the total resistance in the circuit decreases. This causes the total current in the circuit to increase, which would result in an increase in the ammeter reading.
it explodes and burns everyone in the room.
I can think of the following characterisatics of a physical resistor that would beimportant to know in various circuit design situations:ResistancePower dissipation capabilityEquivalent parallel capacitanceEquivalent series inductanceI think it's accurate to say that Resistance is the only one that can be measuredwith a voltage source and ammeter.It would be necessary to know the voltage of the voltage source. Then proceedas follows:Connect the voltage source, resistor, and ammeter in series.Energize the voltage source.Read the ammeter.The resistor's resistance is (Voltage)/(Current, as indicated by the ammeter).
That won't work. To convert an ammeter (a galvanometer is a very sensitive type of ammeter) you connect a high value resistor in series with it.
because lots of current is likely to be flowing through them.however a shunt ammeter is easier to build than the direct ammeter as described above. in a shunt ammeter you use an ordinary meter wound with fine wire and put a small value shunt resistor across it to take almost all the current.