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Now Ammeter is connected in paralleldue to low resistance act like short circuitchances of ammeter get damaged. Hence to make the measurement possible the whole current has to flow through the coil of the ammeter. Ammeter And Voltmeter Connection Series And Parallel Connection Connection Teaching Science Series Parallel So that the same current that is there in the circuit flows through it and gets measured. Ammeter in series ina circuit . At the heart of most analog meters is a galvanometer an instrument that measures current flow using the. Also Know why must an ammeter be connected in series and a voltmeter in parallel. Thus they are placed in series with other components in a circuit to show the current flowing through them. This can only be possible if the resistance on the ammeter is very low so as to ensure correct measurement of current in the circuit. This is why ammeter is connected in series. An ammeter is a measuring device used to measure the electric current