This is a compilation of three dissertations based on experimental projects by final year undergraduate students of Jhargram Raj College, Jhargram-721507, West Bengal, India. The topics embody a detailed idea of Wheatstones Bridge as a basic tool for electrical circuit networks, its different applications in direct and alternating circuits, some new experiments based on it. The first and second chapter gives ideas of Wheatstones Bridge and different types it. The third chapter determines variation of low resistance of manganin wire with the help of Kelvin double Bridge. In the...