Difference between ammeter and voltmeter
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Ammeter |
Voltmeter |
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Definition |
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| It is a galvanometer having law resistance in parallel. It is used to measure current. | It is a galvanometer having high resistance in series. It is used to measure potential difference. |
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Resistance |
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| A low value resistance called SHUNT is connected in parallel with the ceil of galvanometer. | A high value resistance is connected in series with the coil of galvanometer. |
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Type of connection |
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| Ammeter is always connected in series with circuit. | Voltmeter is always connected in parallel with circuit. |
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Option |
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| To measure large current, a low resistance connected in parallel with galvanometer. | To measure high P.D. a high resistance is connected in series with galvanometer. |
