Questions
For the shown cylindrical conductor AB, connected across a source of emf, resistivity of the material decreases as we move from end A towards end B. As we move from end A towards end B
detailed solution
Correct option is C
E =ρJTalk to our academic expert!
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Electrons emerge from an electron accelerator as a beam having a circular cross-section of diameter 3 mm. The beam current is 6 μA and electrons are travelling so fast that their speed can be taken as m/sec with an insignificant error. Electron density in the beam is :
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