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A conductor of length l and …

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A conductor of length l and radius r is connected across a battery.how will the drift velocity of electrons and resistance (R) of conductor be affected when I)L is halved ii) r is doubled iii) v is halved

Posted by Shanmukhi Velamuri 1 year, 8 months ago

CBSE > Class 12 > Physics

1 answers

Adithya Dev 1 year, 7 months ago

(i) When L is halved, Vd is doubled (Vd = eVτ/mL) and R is also halved (R = ρL/A). (ii) When r is doubled, Vd remains the same and R is decreased 4 times. (iii) When V is halved, Vd is also halved and R is the same.

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CBSE > Class 12 > Physics