NEET Physics Current Electricity Questions Solved


The current in a conductor varies with time t as I=2t+3t2 where I is in ampere and t in seconds. Electric charge flowing through a section of the conductor during t = 2 sec to t = 3 sec is

(1) 10 C

(2) 24 C

(3) 33 C

(4) 44 C

(2) dQ = Idt Q=t=2t=3Idt=223tdt+323t2dt

= t223+t323= (9 – 4) + (27 – 8) = 5 + 19 = 24C

Difficulty Level:

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