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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A metallic wire is folded to form a square loop of side a. It carries a current i and is kept perpendicular to the region of uniform magnetic field B. If the shape of the loop is changed from square to an equilateral triangle without changing the length of the wire and current. The amount of work done in doing so is

A metallic wire is folded to form a square loop of side a. It carries a current i and is kept perpendicular to the region of uniform magnetic field B. If the shape of the loop is changed from square to an equilateral triangle without changing the length of the wire and current. The amount of work done in doing so is

horizontal rails connected to i g ​ . The entire system lies in a vertical magnetic field B. The velocity of the wire as a function of time is sends a constant current i through the circuit. The wire ab has a length l and mass m slide on the smooth shown in figure. The current generator i g ​