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  • (a) Write the relationship between mobility and drift velocity in a current carrying conductor. (b) Two aluminium wires have their lengths in the ratio 2 : 3 and radii in the ratio 1 : 3. These are connected in parallel across a battery of em

(a) Write the relationship between mobility and drift velocity in a current carrying conductor.

(b) Two aluminium wires have their lengths in the ratio 2 : 3 and radii in the ratio 1 : 3. These are connected in parallel across a battery of emf E and of negligible internal resistance. Find the ratio of drift velocities of the electrons in the two wires.

 

 

 
 
 
 
 

Answers (1)

a)

\mu=\frac{v_d}{E}

b)

\\|v_d|=\frac{eE}{m}\tau=\frac{eV}{lm}\tau\\\frac{v_{d1}}{v_{d2}}=\frac{l_2}{l_1}=\frac{3}{2}

Posted by

Safeer PP

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