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This is an MCQ-based quiz on the topic of Magnetism: Introduction to maxwells equations.
This set of MCQs helps you brush up on the important physics topics and prepare you to dive into skill practice and expand your knowledge.
Electromagnetic waves come in various forms.
•Visible light
•Infrared
•Radio
•X-rays
True
False
EM waves carry both energy and momentum, which can be delivered to a surface.
True
False
The ratio of the electric field to the magnetic field in an EM wave equals the speed of light.
True
False
EM waves travel at the speed of light.
True
False
Let's consider the quartet of Maxwell's equations in a vacuum where there's no charge and no current. In the language of calculus, they're a set of coupled differential equations for the electric and magnetic fields E and B. If you know the right tricks, you can manipulate them into two decoupled differential equations: one for E, and one for B. Each one looks just like a wave equation. How fast are the waves moving?
The speed of light
About twice as fast for E as for B
Speed of sound
They don’t move at all if there’s no charge
Maxwell concluded that visible light and all other electromagnetic waves consist of fluctuating electric and magnetic fields, with each varying field inducing the other.
True
False
•Maxwell calculated the speed of light to be
3*10^8 m/s
3*10^9 m/s
Speed of sound
None of the above
Maxwell hypothesized that a changing electric field would produce a magnetic field. and edited which equation:
Gauss’s
Faraday’s
Ampere’s
None of the above
Based on Maxwell's starting points
•Magnetic fields are generated :
By moving charges
By still charges
By chemical reactions
By summer and hot weather
One of Maxwell's starting points was
A varying magnetic field:
Induces only emf
Induces only electric field
Both A and B
None of the above
