Q.
The plot represents the flow of current through a wire at three different times.
The ratio of charges flowing through the wire at different times is
A) 2 : 1 : 2
B) 1 : 3 : 3
C) 1 : 1 : 1
D) 2 : 3 : 4
Explanation
(c) Since, charge (q)=current (i) × times (t)
Therefore, charge is equal to area under the curve.
∴ Ist rectangle =q=lb=2
IInd rectangle =q=lb=2
$IIIrd\ triangle = q = \frac{1}{2}lb = 2$
Hence, ratio is 1:1:1.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.