Two pith balls each carry a 2 muC charge. If they are 1 cm apart then the electr

Question

Two pith balls each carry a 2 muC charge. If they are 1 cm apart then the electrostatic force between them is The elementary charge is the charge on the proton the charge on the electron the charge on the up quark the charge on the down quark The Electric field Generally points away from positive charge and towards negative charges. Generally points away from negative charges and toward positive charges Generally points along lines of constant potential Circles around charge carrying conductors The earth has a substantial magnetic field because its iron core is magnetized because of electrical currents in its core because of thunderstorms. just to confuse us. The magnitude force between two parallel current carrying wires depends on their separation (r), where r is the distance between them, in fact it goes as r^1 r^2

Explanation / Answer

1) F = kq1q2/r2 = (9 * 109) * (2 * 10-6)2 / (1 * 10-2)2 = 360 N

2) Elementary charge is the charge carried by a proton or electron.

3) Electric field points away from the positive charge and towards the negative charge.

4) Because of electrical currents in the core.

5) F = µoI1I2/2r

So, F is inversely proportional to r

6) Magnetic force, FB = q(v x B)

So, for FB = 0, velocity and magnetic field should be in the same direction.

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