All Questions
37
questions
2
votes
2
answers
109
views
Inductor circuit
Consider a inductor circuit with an inductor connected to a DC battery and a switch. Initially the switch is open.
At time $t=0$ the switch is closed. What will happen to the inductor just after the ...
- 21
2
votes
5
answers
5k
views
Can pulsating DC current be transformed?
Since pulsating DC current is changing, why doesn't it induce a changing magnetic flux in the transformer core? Is it able to induce a transformed current in the secondary coil?
- 91
8
votes
6
answers
2k
views
How does an inductor store magnetic energy?
I am trying to figure out what the potential energy of an inductor with a current really means. In a capacitor, the energy stored works like this: if you let the plates attract each other, before ...
- 669
1
vote
1
answer
108
views
Shouldn't the currents be time-continuous here?
My intuition is that the current upon an inductor (say, a solenoid) will always be time-continuous, without "sudden changes". But below is a case that seemingly contradicts this point of view.
There ...
- 400
4
votes
2
answers
2k
views
Why is there no induced electric field in the experiment (Faraday's Law)
Below are three circuit diagrams for each of Faraday's experiments that allowed Faraday to come up with Faraday's Law. In Griffiths' Introduction to Electrodynamics Griffiths states (on page 302 of ...
- 518
1
vote
2
answers
396
views
What physical forces allows for electromagnetic induction [duplicate]
In electromagnetic induction, what force is actually doing the work? what physical force actually drives the electrons around the circuit?
Let's say we have a coil and an increasing magnetic field ...
- 815
4
votes
2
answers
3k
views
Cause of electromagnetic induction?
The rate of change of magnetic flux through a surface (open) is related with the line integral over the closed loop binding the selected surface by one of the Maxwell's equation. But that means even ...
- 3,148