1.?.) Six point charges, each of +9/6, are equally spaced around the equator of
ID: 2036891 • Letter: 1
Question
1.?.) Six point charges, each of +9/6, are equally spaced around the equator of a sphere of radius a. Calculate the electric field at the North pole of the sphere. 5 marks b) A piece of flexible wire is free to move around a frictionless laboratory bench except at points a and b at which it is anchored to the bench, as shown in the figure Describe what would happen to the wire if a steady current were passed through it, explaining your reasoning 5 marks c) An electron is travelling at a speed of 7.3 × 10° ms-1 in the zy plane in a region in which there is a constant magnetic field 0.022 T in the z direction. Calculate the radius of curvature of the electron's trajectoryExplanation / Answer
for second part of the answer
In staedy state limit the charge acceleration is is exactly balanced by the process within the rseistor so the current is constant but if we consider here car for frictionless it is impossible for it to roll down the road but in this case the voltage drops can be neglected.
c) the formula of radius of curvature is given by r=mvsin(theta)/qB
a) the electric field = q/4(pi)R^2 therefore (sqrt2 8pi epsilon0 a^2)
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