निम्नलिखित वैज्ञानिक के क� – McqOptions

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1.	निम्नलिखित वैज्ञानिक के कौन से पहले एक विद्युत प्रवाह के चुंबकीय प्रभाव की खोज की ?
A.	ओर्स्टेड
B.	हेनरी
C.	फैराडे
D.	गॉस
Answer» B. हेनरी

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