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The flux linked per each turn of coil of 5xx 10^3 turns changes from 0.4 xx 10^(-3) Wb to 0.6 xx 10^(-3) Wb in 0.2 sec. If the total resistance of circuit including the coil is 20 Omega , find the change induced charge in coil. |
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Answer» 0.01 m C `phi_1=0.4xx10^(-3)` Wb `phi_2=0.6xx10^(-3)` Wb `R=20 Omega` `RARR` Induced emf in coil `Q=(N(phi_2-phi_1))/R` `=(5xx10^3xx(0.6xx10^(-3)-0.4xx10^(-3)))/20` `=(5xx10^(-3)xx2xx10^(-3))/20` `therefore` Q=0.05 C |
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