An a.c. generator consists of a coil of 50 turns and an area 2.5 m2 rotating at an angular speed of 60 rad s-1 in a uniform magnetic field of 0.3 T between two fixed pole pieces. What is the flux through the coil, when the current is zero?

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An a.c. generator consists of a coil of 50 turns and an area 2.5 m<sup>2</sup> rotating at an angular speed of 60 rad s<sup>-1</sup> in a uniform magnetic field of 0.3 T between two fixed pole pieces. What is the flux through the coil, when the current is zero?