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An electron moving with a velocity of 10 to the pwer 2 with a velocity of 10 to the power 7 describe a cricle of radius 6×10 to the power 3 calculate e/m of the electron |
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Answer» this so easyExplanation:ANSWERLet the e/m of ELECTRON be LCentripetal FORCE = rmv 2 -------------------------(I)Force provided by the magnetic field =qBv ----------------------(II)Equating (I) and (II),rmv 2 =Bqvrmv =Bq⇒ Brv = me ⇒L= Brv = 10 −2 ×6×10 −3 10 7 ⇒L=1.667×10 11 Ckg −1 |
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