Question

Chapter 31, Problem 002 Your answer is partially correct. Try again. The frequency of oscillation of a certain LC circuit is 261 kHz. At time t = 0, plate A of the capacitor has maximum positive charge. At what earliest time t> 0 will (a) plate A again have maximum positive charge, (b) the other plate of the capacitor have maximum positive charge, and (c) the inductor have maximum magnetic field? (a) Number3.846e-6 Units (b) NumberT 1.923e-6 Units (c) Number 0.9615e-6

Answer 1

your calculations are perpfect, however while entering the answer in the given box you hava made mistake.

rertain the numerical number and change the unit to second or

retain the unit as and delete -6 th power of 10

LS

period of oscillation T = 1/f = 1/ 261 kHz = 3.83 x 10^-6 s = 3.83 $\mu$ s

a. the time at which plate A again have maximum positive charge =one complete time period = 3.83

LS

b. the time at which other plate have maximum positive charge = half of the time period = 1.92

LS

c.when inductor have maximum magnetic field current in the circuit will also be maximum.

so it happens when t = 1/4 of time period = 0.959 .

LS

so while entering the answer avoid power of 10.