top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

General physics question: please help me electromagnetics?

+2 votes
423 views

Picture

Circuit 1 has a capacitor and circuit 2 has an inductor, while the batteries, resistors, and light bulbs are same in both circuits.

Consider the statements below when the two switches are closed simultaneously: *
(Batteries and inductor are "ideal", that is: they have zero internal resistance.)

TRUE FALSE
Light bulb 2 glows first.
Light bulb 2 glows the longest.
Battery 2 must provide more energy than battery 1.
The inductor in 2 must store more energy than the capacitor in 1.

Please help me. TT

posted Nov 13, 2017 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

Since in both the circuit the type of current used is dc, circuit one will have no current flowing through its bulb. Circuit 2 will have its bulb slowly glowing brighter and brighter as the inductor is opposing the buildup of current in the circuit until steady state is achieved. The inductor in the Circuit 2 is responsible for additional battery energy consumption which is evident as there is an initial opposition by it for a buildup up of current which is stored as energy in the magnetic field of the inductor.

answer Jan 1, 2018 by Tejas Naik



Similar Puzzles
+2 votes

The test question below was presented on a college physics exam. The student taking the exam received a zero for this particular question. Can you answer the 2 questions?

BTW: there is no elephant in the way.

enter image description here

0 votes

You have a glass Erlenmeyer Flask and a boiled egg sitting on top of the opening. It can easily be pushed into the flask. How can the egg enter the flask without it being touched.

Hint: https://www.youtube.com/watch?v=dIjjGrJHSIo

0 votes

A parachutist drops freely from an aeroplane for 10 seconds before the parachute opens out.
Then he descends with a net retardation of 2.5 m/s2 and strikes the ground with a velocity 5 m/s.
Find the height in metres from which he bails out of the plane?
( Take g = 10 m/s )

0 votes

A stone is dropped into a well of depth 67.6 m.
The splash of water is heard after 3.91 seconds.
Find the velocity of sound in m/s?

...