61 Answered Questions for the topic electromagnetism

04/14/19

How can I stand on the ground? EM or/and Pauli?
There is this famous example about the order difference between gravitational force and EM force. All the gravitational force of Earth is just countered by the electromagnetic force between the... more
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03/19/19

What causes 'positive' lightning to be rarer, higher charged, and longer lasting than 'negative' lightning?
Why is 'positive' lightning rarer, brighter, higher charged, and longer lasting than 'negative' lightning? Are there any other unique characteristics to positive lightning that sets it apart from... more
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Electromagnetism Physics

01/10/19

Finding magnetic field at a specific location
A long, straight wire carries a current of 2.5 μA. An electron moves parallel to the wire with a constant speed of 3.6x104 m/s at distance "d" below the wire. What is the magnitude and direction fo... more
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Electromagnetism Electrical Engineering

11/20/18

What is an alternator
What is the difference between an alternator and a generator?PO
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Electromagnetism Physics

07/26/18

At what point will magnetic induction be zero?
If two current carrying long conductors are placed mutually perpendicular to each other (like a +), what is the locus of points where the magnetic induction is zero?
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Electromagnetism Physics Magnetism Magnetic Field

02/10/18

physics magnetism
An electron travels at a constant speed of 3.40 × 106 m/s towards the left of this page. It then enters a uniform magnetic field and experiences a maximum force of 4.65 × 10-8 N that points towards... more
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08/17/17

Electromagnetic field strength:
Electromagnetic field strength:Let's say I have 2 electromagnets both emitting fields and can be turned on and off. One is stationary and the other is attached to a (to hopefully make it easier as... more
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Electromagnetism Physics

04/25/17

Please Help! Physics-EM Waves
Combing your hair leads to excess electrons on the comb. How fast would you have to move the comb up and down to produce green light? (Assume λ = 569 nm.)
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Electromagnetism Physics Electricity Magnetism

05/23/16

Magnetic Force
What is the magnetic force on a particle that has –3.2 × 10–19 C of charge and is moving at 2.5 × 107 m/s to the right through a magnetic field that is 0.24 T and pointing away from you? Specify... more
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Electromagnetism Magnetism Magnetic Field

01/01/16

An electron and proton moving with the same velocity enter a uniform magnetic field. which one of them experiences more force?
An electron and proton moving with the same velocity enter a uniform magnetic field. which one of them experiences more force?
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Electromagnetism Matlab

09/21/14

how to assign voltage to circle boundaries in matlab
I have created a circle in a square grid using below code, Now i need to assign 1 volt to all the boundary of the circle. could you help me with that code? radius2 = 1;x = midrow;y =... more
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