![electromagnetism - What are the limits of validity for the magnetic field of a solenoid? - Physics Stack Exchange electromagnetism - What are the limits of validity for the magnetic field of a solenoid? - Physics Stack Exchange](https://i.stack.imgur.com/IHvMQ.png)
electromagnetism - What are the limits of validity for the magnetic field of a solenoid? - Physics Stack Exchange
![1.The magnetic field at a point near the centre but outside a current-carrying solenoid is zero.Why? 2.What is the average value of voltge over a full cycle of alternating current and why? - 1.The magnetic field at a point near the centre but outside a current-carrying solenoid is zero.Why? 2.What is the average value of voltge over a full cycle of alternating current and why? -](https://images.topperlearning.com/topper/tinymce/imagemanager/files/4a39ffb215f67a35c67ddf1d640be8e157aaca9896e975.85983026coil1.png)
1.The magnetic field at a point near the centre but outside a current-carrying solenoid is zero.Why? 2.What is the average value of voltge over a full cycle of alternating current and why? -
![The magnitude of the induced electric field inside the solenoid, a distance r < R from its long central axis is :dfrac {3mu_0nI_{max}omega}{2}r sin omega tdfrac {mu_0nI_{max}omega}{2}r sin omega tdfrac {mu_0nI_{max}omega}{2}r cos The magnitude of the induced electric field inside the solenoid, a distance r < R from its long central axis is :dfrac {3mu_0nI_{max}omega}{2}r sin omega tdfrac {mu_0nI_{max}omega}{2}r sin omega tdfrac {mu_0nI_{max}omega}{2}r cos](https://search-static.byjusweb.com/question-images/toppr_ext/questions/120981.png)
The magnitude of the induced electric field inside the solenoid, a distance r < R from its long central axis is :dfrac {3mu_0nI_{max}omega}{2}r sin omega tdfrac {mu_0nI_{max}omega}{2}r sin omega tdfrac {mu_0nI_{max}omega}{2}r cos
![PPT - Unit 4 Day 8 – Ampere's Law & Magnetic Fields thru Solenoids & Toroids PowerPoint Presentation - ID:5469749 PPT - Unit 4 Day 8 – Ampere's Law & Magnetic Fields thru Solenoids & Toroids PowerPoint Presentation - ID:5469749](https://image3.slideserve.com/5469749/magnetic-field-of-a-solenoid-l.jpg)