Electromagnetic Currents and Acceleration
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Question: For an accelerating voltage of 900 V calculate the time taken for an electron to reach the anode after being accelerated from rest (u=0) at the cathode of a CRT. Anode -cathode separation is 1cm?
Question: A wire carrying a current of 100 A due West in Australia is suspended between two towers 50 m apart. The lines of force of the Earth's magnetic field enter the ground there in a northerly direction at a 45 degree angle; the magnitude of the field is 5 multiplied by 10 minus 5 T. Find the magnitude and direction of the force on the wire exerted by the Earth's field?
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The expert examines electromagnetic currents and acceleration.
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the response is attached in the following file
1. Force on electron = F = e E = (e V )/ d
Where e = charge of electron = 1.6 10-19C
V = accelerating voltage = 900 volts (given)
E = electric filed between plates of CRT
d = separation between plates = 1 cm = 0.01 m
Acceleration = a = F/m ...
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