Three resistors are connected as shown in fig. with an ammeter and a cell. Calculate a) effective resistance & b) reading through ammeter shown in the diagram.
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To measure current, you must connect the two leads of the ammeter in the circuit so that the current flows through the ammeter. In other words, the ammeter must become a part of the circuit itself. The only way to measure the current flowing through a simple circuit is to insert your ammeter into the circuit.
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a) effective resistance = 4 ohms
b) R = V/I => 4 = 6/I => I = 6/4 = > 3/2 ( 0.15)Amperes.
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