-
Home
- University physics volume 2
- Unit 2. electricity and magnetism
- Electromagnetic waves
- Maxwell’s equations and
Conceptual questions
Explain how the displacement current maintains the continuity of current in a circuit containing a capacitor.
The current into the capacitor to change the electric field between the plates is equal to the displacement current between the plates.
Got questions? Get instant answers now!
Describe the field lines of the induced magnetic field along the edge of the imaginary horizontal cylinder shown below if the cylinder is in a spatially uniform electric field that is horizontal, pointing to the right, and increasing in magnitude.
Got questions? Get instant answers now!
Why is it much easier to demonstrate in a student lab that a changing magnetic field induces an electric field than it is to demonstrate that a changing electric field produces a magnetic field?
The first demonstration requires simply observing the current produced in a wire that experiences a changing magnetic field. The second demonstration requires moving electric charge from one location to another, and therefore involves electric currents that generate a changing electric field. The magnetic fields from these currents are not easily separated from the magnetic field that the displacement current produces.
Got questions? Get instant answers now!
Problems
Show that the magnetic field at a distance
r from the axis of two circular parallel plates, produced by placing charge
Q (
t ) on the plates is
.
Got questions? Get instant answers now!
A potential difference
is maintained across a parallel-plate capacitor with capacitance
C consisting of two circular parallel plates. A thin wire with resistance
R connects the centers of the two plates, allowing charge to leak between plates while they are charging.
(a) Obtain expressions for the leakage current
in the thin wire. Use these results to obtain an expression for the current
in the wires connected to the capacitor.
(b) Find the displacement current in the space between the plates from the changing electric field between the plates.
(c) Compare
with the sum of the displacement current
and resistor current
between the plates, and explain why the relationship you observe would be expected.
a.
; b.
;
c.
; which is the sum of
and
consistent with how the displacement current maintaining the continuity of current.
Got questions? Get instant answers now!
Suppose the parallel-plate capacitor shown below is accumulating charge at a rate of 0.010 C/s. What is the induced magnetic field at a distance of 10 cm from the capacitator?
Got questions? Get instant answers now!
The potential difference
V (
t ) between parallel plates shown above is instantaneously increasing at a rate of
What is the displacement current between the plates if the separation of the plates is 1.00 cm and they have an area of
?
Got questions? Get instant answers now!
A parallel-plate capacitor has a plate area of
and a separation of 0.0100 m. What must be must be the angular frequency
for a voltage
with
to produce a maximum displacement induced current of 1.00 A between the plates?
Got questions? Get instant answers now!
The voltage across a parallel-plate capacitor with area
and separation
varies sinusoidally as
, where
t is in seconds. Find the displacement current between the plates.
Got questions? Get instant answers now!
The voltage across a parallel-plate capacitor with area
A and separation
d varies with time
t as
, where
a is a constant. Find the displacement current between the plates.
Got questions? Get instant answers now!
Questions & Answers
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
What would be the best educational aid(s) for gifted kids/savants?
treat them normal, if they want help then give them.
that will make everyone happy
Saurabh
What are the treatment for autism?
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities.
before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue..
sometimes due to these physical problems..the diagnosis may be misdiagnosed.
treatment for autism.
well it depends on the severity.
since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision.
play therapy.
speech therapy.
Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game.
string and beads game.
the more you interact with the child the more effective
Jharna
results you'll get..
please consult a therapist to know what suits best on your child.
and last as a parent. I know sometimes it's overwhelming to guide a special kid.
but trust the process and be strong and patient as a parent.
Jharna
Got questions? Join the online conversation and get instant answers!
Source:
OpenStax, University physics volume 2. OpenStax CNX. Oct 06, 2016 Download for free at http://cnx.org/content/col12074/1.3
Google Play and the Google Play logo are trademarks of Google Inc.