2019 TMA Questions & Answers: MTH417 - Electromagnetic Theory

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LadyB
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2019 TMA Questions & Answers: MTH417 - Electromagnetic Theory

Postby LadyB » Tue Oct 01, 2019 5:15 am

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Question
This combined force law \(\widetilde{F}= q(\widetilde{E}+\frac{\widetilde V}{C} \times \widetilde{B})\) is known as

Answer
Lorentz



Question
How would you describein continous medium mechanics,the response of a linear elastic medium to strain.

Answer
Hookes law



Question
The total force that acts on a charge if we have both electric and magnetic fields can be called a _______

Answer
Lorentz



Question
How would you describe the motion of two wires in motion running currents,next to one another in parallel.(opposite direction).

Answer
They are repulsed



Question
How would you describe the motion of two wires in motion running currents,next to one another in parallel.(same direction).

Answer
They are attracted



Question
As with the electric field,the magnetic field is generated by all the pther current in the universe. How would you describe the magnetic field \(\widetilde{B}\) interms of a vector \widetilde{A}\)?

Answer
\(\widetilde{B}=\widetilde\bigtriangledown\times\widetilde{A}\)



Question
It was noted that a moving charge may experience another force which is proportional to its velocity J,with regards tomagnetic field B. This could be describe thus.

Answer
\(\widetilde {F_{\beta}}= q \widetilde {V}\times \widetilde B\)



Question
The Electric field can be described by a scalar potential field V,which is related to the electric field by the formular.

Answer
\(E=-\bigtriangledown V$$



Question
How can you describe mathematically,those objects that is possible of possessing electrical charges,and that these charges can exert a force on each other even through the vacuum,where q=Electrical charge , E=Eectrical field

Answer
\(\widetilde{F_{E}}= q\widetilde {E}\)



Question
List the basic equations of Electromagnetism.

Answer
Maxwell equations and Lorentz forces.






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