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Forces due to magnetic ﬁelds
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alternating current alternating e.m.f. ampere applied atoms axis calculated called capacity carrying a current Chapter charge Q charged particles closed path closed surface coil complex numbers components condenser conductors constant curl current element current ﬂowing cylindrical deﬁned deﬁnition diamagnetic dielectric direction discussed distance electric charge electric ﬁeld electric ﬂux electromagnetic electrons electrostatic force equipotential surfaces expression factor farad ferromagnetic ﬁeld due ﬁnd ﬁrst ﬁxed ﬂux density ﬂux leaving frequency Gauss’s law give given hysteresis impedance induced e.m.f. inﬁnitely internal self-inductance ions line integral magnetic ﬁeld magnetic ﬂux magnitude material measured metal metre microhenry moving charges mutual inductance negative number of turns obtained parallel perpendicular plane positive potential difference proportional quantity radius resistance resonant circuit right-angles rotating round scalar product self-inductance shown in ﬁgure solenoid source-charge speciﬁed sphere straight wire test-charge transformer unit length vector product velocity voltage x-component zero