Question

A circuit element is placed in a closed box. At time t = 0, a constant current generator supplying a current of I amp is connected across the box. Potential difference across the box varies according to graph as shown in the figure. The element in the box is-

• A. A resistance of 2W
• B. A battery of emf 6V
• C. An inductance of 2 H
• D. A capacitance

Answer 1

Answer: (D)

A capacitance

Answer 2

I = $\frac { \mathrm { dq } } { \mathrm { dt } }$

q = it + a

V =

V =

\ V is proportional to time