Questions
A steady current is flowing through the conductor of variable cross section as shown in the figure. Then select the correct option.
detailed solution
Correct option is B
In a current carrying conductor, P=Resistivity =EJ⇒E=ρ.J=ρiASince current i the same at all sections and resistivity is constant E1Talk to our academic expert!
Similar Questions
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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