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?
Two questions regarding electromagnetism.