Physics · DC Generators
यदि एक लैप-वाउंड (lap-wound) डीसी जनरेटर में अन्य सभी कारकों को स्थिर रखते हुए ध्रुवों (poles) की संख्या दोगुनी कर दी जाए, तो उत्पन्न विद्युत वाहक बल (EMF):
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