मान लीजिए कि 10 m लंबे एक तार को मोड़कर एक फेरे (one turn) का वृत्ताकार लूप बनाया जाता है। यदि लूप से 4 A की धारा प्रवाहित होती है, तो उत्पन्न चुंबकीय आघूर्ण nπ Am² है। n का मान क्या है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?