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                                    3. An electric current of 15 A flows in a wire of area ofcross-section 10-5 m2. Calculate drift velocity ofelectrons if the number of electrons per m3 of the wireof electric conduction is 8.4 x 1028. Given that chargeon electron is 1.6 x 10-19 C. Ans. 1.116 x 10-4 ms-1] | 
                            
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