Three students Shweta, Ayesha and Samridhi were performing an experiment to understand the factors on which t…

Three students Shweta, Ayesha and Samridhi were performing an experiment to understand the factors on which the resistance of a conductor depends. Each one of them completed electric circuit with the help of a cell, an ammeter, a plug key and wire. Shweta put nichrome wire of length ‘$l$’ in the circuit and after plugging the key, noted current in the ammeter. Ayesha put nichrome wire of same thickness but twice the length i.e. ‘$2l$’ in the circuit and after plugging the key, noted current in the ammeter. Samridhi took copper wire of length ‘$l$’ and same thickness in the circuit and after plugging the key, noted current in the ammeter.