Test Index

JEE Main 2015 Paper

Section: Physics

© examsnet.com

Question : 71 of 90

Marks: +1, -0

An LCR circuit is equivalent to a damped pendulum. In an LCR circuit the capacitor is charged to

Q_0

then connected to the L and R as shown.

If a student plots graphs of the square of maximum charge

Q_{\max}^2

on the capacitor with time (t) for two different values

L_1

L_2(L_1 > L_2)

of L then which of the following represents this graph correctly? (Plots are schematic and not drawn to scale)

Solution:

As

L_1 > L_2

therefore

\frac{1}{2} L_1 i^2 > \frac{1}{2} L_2 i^2

∴Rate of energy dissipated through R from

L_1

will be slower as compared to

L_2

.

© examsnet.com

Go to Question:

Prev Question

Next Question