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 Coulomb is the MKSA unit of charge, equal to the charge on an electron the charge on a proton The charge on Avogadro's number of electrons One Ampere second 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 r^3

Explanation / Answer

Here ,

1)

let the charge on each is q

q = 2 uC

electrostatic force = k * q^2/d^2

electrostatic force = 9*10^9 * (2 *10^-6)^2/.01^2

electrostatic force = 360 N

the electrostatic force between them is 360 N

2)

as charge = current * time

for current = 1 A

time , t = 1 s

charge = 1 A * 1 s

Charge = 1 A.s

hence , the correct option is d) one Amphere second

3)

for the elementary charge

the smallest unit of charge is

it the charge on b) the charge on electron

4)

as the electric field is defined in the direction of force acting on the positive charge.

the direction of force on negative charge is in the oposite to the direction of force on positive charge

the correct option is

a) Generally points away from the positive charge and towards negative charge

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.