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An a.c. generator consists of a coil of 1000 turns and area `2m^(2)`. The coil is rotating in a transverse uniform magnetic field of 0.2 T at an angular speed of `60 rad//s`. What is the maximum current drawn from the generator if resistance of the circuit including that of the coil is `6000 Omega`?A. 2.5 AB. `3 A`C. `4 A`D. `5 A` |
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Answer» Correct Answer - C `N = 1000, A = 2m^(2), B = 0.2 T and omega = 60 rad//s and R = 6000 Omega` `E_(0) = NAB omega and I_(0) = (E_0)/(R)` `:. I_(0) = (NABomega)/(R) = (1000 xx 2 xx 0.2 xx 60)/(6000) = 4A`. |
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