Physics · Current Electricity
क्रमशः l और 3l लंबाई के दो समान चालकों को एक ही ताप पर रखा गया है। उन्हें 1 : 3 के अनुपात में विभवांतर दिया जाता है। उनमें इलेक्ट्रॉनों के अनुगमन (अपवाह) वेग का अनुपात है:
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