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(a) Calculate the electric field of magnitude E at the position of Bead 2 as a function of q.
(b) Calculate the fore on Bead 2 in the direction along the ring and find the equilibrium position.
(c) If Bead 2 oscillates near the equilibrium position, calculate the oscillation frequency.
(a) Find the net charge Q of the shell
(b) Calculate the electric field E at a distance R frome the center over the range 0 ￡R￡￥
(c) Fin the maximum E.
respectively, and 2 C. q1 = q2 = −q3 = µ Determine the magnitude and the direction
of the electric field at point P.
straight highway, one at a constant speed of
59 mi/h and the other at 79 mi/h.
Assuming they start at the same point, how
much sooner does the faster car arrive at a
destination 12 mi away?
a) What is its e.m.f.?
b) What is the power rating of a television receiver that uses 270,000 Joules to operate for 1.5 hours?
a) The length of the wire
b) The electrical resistance of the wire.
• Density of copper = 8.96 x 103 kg m-3
• Resistivity of copper = 1.68 x 10-8 Ω m