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A wire whose cross -sectional area is increasing linearly from its one end to the other, is connected across a battery of  V volts.Which of the following quantities remain constant in the wire? 
a. Drift velocity 
B. Current density 
C. Electric current 
D. Electric  field 

Asked by Priyanka 15th November 2017, 3:47 PM
Answered by Expert
Electric current remains constant.
It depends on the voltage of the battery and not on  cross -sectional area
Answered by Expert 6th December 2017, 5:11 PM
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