Motor converts electrical to mechanical energy using force on a current-carrying conductor in magnetic field (F = BIL). Electromagnetic induction is for generator. Motor principle: A current-carrying coil experiences torque in magnetic field.
Explanation:
V_s/V_p = N_s/N_p ⇒ V_s = 100×(5/1) = 500V. Step-up transformer increases voltage. Memory aid: 'Turns ratio = voltage ratio; current ratio inverse'. Direct transformer formula application frequently tested in competitive exams with ratio calculations.
Kirchhoff's Voltage Law (KVL), which states that the algebraic sum of all potential differences in any closed loop is zero, is a direct manifestation of the conservation of:
Explanation:
Kirchhoff's Second Law (KVL) is based on the principle that the electrostatic field is conservative. The work done (energy spent or gained) in moving a unit charge completely around a closed electrical loop must be zero. Therefore, the sum of voltage drops and EMFs is zero. This strictly represents the Law of Conservation of Energy.
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