A single loop contains three ideal batteries with emfs ,

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

A single loop contains three ideal batteries with emfs E1E_1, E2E_2, and E3E_3 connected in series. Beginning at point PP, a traversal proceeds through the batteries in the following order: across E1E_1 from its positive to negative terminal, across E2E_2 from its negative to positive terminal, and across E3E_3 from its positive to negative terminal, before returning to PP. Taking clockwise motion as positive, what is the algebraic expression for the net potential change ΔVloop\Delta V_{\text{loop}} along this traversal? (a) ΔVloop=+E1+E2+E3\Delta V_{\text{loop}} = +E_1 + E_2 + E_3 (b) ΔVloop=−E1+E2−E3\Delta V_{\text{loop}} = -E_1 + E_2 - E_3 (c) ΔVloop=+E1−E2+E3\Delta V_{\text{loop}} = +E_1 - E_2 + E_3 (d) ΔVloop=0\Delta V_{\text{loop}} = 0

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