Mathematics · Magnetic Effects of Current
दूरी d द्वारा अलग किए गए दो अनंत लंबे समानांतर तार, एक ही दिशा में समान धारा 'I' ले जाते हैं। उनके बीच प्रति इकाई लंबाई बल F है। यदि अन्य सभी मापदंडों को समान रखते हुए एक तार में धारा को तीन गुना कर दिया जाए, तो उनके बीच बल का नया परिमाण क्या होगा?
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