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What is ammeter? |
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Answer» It is instrument which is used for measuring electric current An ammeter is a device which measure the electric current and it is always connected in series an instrument for measuring electric current in amperes. An ammeter is a device (instrument) used for measuring large electric currents in ‘ circuits. For this purpose, it is put in series with the circuit in which the current is to be measured.For accurate measurement, an ammeter must have following two properties:\tA very small resistance (zero in ideal case).\tA very large current carrying capacity.It is done by connecting low resistance in parallel with the coil of the galvanometer. This parallel low resistance is called shunt. The shunt reduces the overall resistance of the ammeter and increases its current carrying capacity. |
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