Consider the relation between E field, E force, and charge, what is the SI unit

Question

Consider the relation between E field, E force, and charge, what is the SI unit of E field? Consider the relation between E field, distance and potential, what is the SI unit of E field? Consider the relation between potential, potential energy and charge, the SI unit of potential is 1V=1 J/C. True or false? Consider the relation between potential, potential energy and charge, the SI unit of potential is 1V=1 JC. True or false? The electric potential energy change and the electrical potential change always have the same sign for both positive and negative charges. True or false? The equipotential surfaces associated with a point charge are a family of spherical ones center at the point charge. True or false? The potential created by a negative point charge is negative everywhere, if zero potential is set at infinity. True or false? A pair of like charges has negative potential energy because they repel each other. True or false? A pair of opposite charges has negative potential energy because they attract each other, and when they move closer from infinity, kinetic energy increases and potential energy is released. True or false? A pair of like charges has positive potential energy, because it requires external agent's extra work to bring them closer from infinity. True or false?

Explanation / Answer

(1).Electric force F = electric field x charge

F = Eq

S.I unit of electric field = N/C

(2). Electric field E = Potential difference / distance

E = V/ d

S.I unit of electric field = volt / m

(3). Potential energy U = (potential)charge

U = Vq

S.I unit of potential = volt

1 V = 1 J / C

True

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