Mutual Inductance in a solenoid

AI Thread Summary
The discussion focuses on calculating the mutual inductance (M) between a long solenoid and a shorter surrounding coil. The user attempted to derive M using the formula M = P*n1*n2*A/L but received feedback indicating the solution was incorrect. The problem involves a time-varying current in the solenoid, and the user is uncertain about the application of the relevant equations. Clarification on the correct approach and potential errors in the calculation is sought. Accurate determination of mutual inductance is crucial for understanding the interaction between the coils.
matt72lsu
Messages
94
Reaction score
0

Homework Statement


A long solenoid (black coil) with cross-sectional area A cm^2 and length L is wound with n1 turns of wire. A time-varying current i1 flows through this wire. A shorter coil (blue coil) with n2 turns of wire surrounds it. Use (uo)(m*kg/s^2*A^2)
1) Find the value M of the mutual inductance.

Note: The current in coil 1 is constantly changing. However, when using the hints it may help you to consider the instant at which the current in coil 1 is A.

I don't exactly know how to post the image

Homework Equations



I used the above equation

The Attempt at a Solution


I got M = P*n1*n2*A/L but it was wrong. Not sure where I went wrong. Any help would be appreciated
 
Physics news on Phys.org
if a pic is necessary, i can probably describe it
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »

Similar threads

Current in circular wire surrounding infinite solenoid in a circuit
Replies
7
Views
1K
Induced Current Problem from the professor not in our textbook
Replies
2
Views
1K
How Does Coil Configuration Affect Solenoid Inductance?
Replies
8
Views
3K
Solving Mutual Induction Exercise | Let's Get Started!
Replies
2
Views
1K
How Do You Calculate Mutual Inductance in Toroidal Solenoids?
Replies
17
Views
4K
Mutual inductance of a coil inside a solenoid
Replies
4
Views
4K
Does Mutual Inductance Affect Voltage in an Open Circuit?
Replies
1
Views
1K
Comparing Self-Inductance and Power Dissipation in Two Solenoids
Replies
13
Views
2K
Understanding self-inductance in a solenoid.
Replies
3
Views
1K
Mutual Inductance between a coil and a long straight wire
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top