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Q. |
An electron is travelling at right angles to a uniform magnetic field of flux density 1.2 mT with a speed of $$$8*10^{6} \: ms ^{-1}$$$ , the radius of the circular path followed by an electron is |
A. | 3.8 cm |
B. | 3.7 cm |
C. | 3.6 cm |
D. | 3.5 cm |
Answer» A. 3.8 cm |
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