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Conventional current

In a battery,...

Question

In a battery, what separates negative charge from the positive charge?

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Solution

Batteries use a substance called an electrolyte between their positive and negative terminals.

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For a real battery the work done by battery is equal to increase in electrical potential energy of a positive charge as charge moves from negative terminal to positive terminal of battery

Is this above statement true. ??

p^ is an unit vector which represents the direction of an electric dipole from negative charge to the positive charge. Why only in the direction from negative charge to the positive charge? What is the actual direction of p^ or the electric dipole? please explain in deep...

Q. Given the diagram below with positive and negative charges separated by the distance d, how much work (in Joules) would the electric field created by the pictured charges do on a separate

+ 1.0 C

charge in moving it from point A to point B?
The blue charge is negative. The red charge is positive.
Answer are expressed in terms of k (the coulomb constant) and given distances

Q. The lines of force of the electric field of a positive charge

(+ q)

and a negative charge

(- q)

are shown in figure (a) and (b) below. Then:-

(a) The work done in moving a small positive charge (+

q_{0}

) from Q to P will be positive
(b) The work done in moving a small negative charge (−

q_{0}

) from B to A will be positive
(c) In going from Q to P, the kinetic energy of a small negative charge (−

q_{0}

) increases
(d) In going from B to A, the kinetic energy of a small negative charge (−

q_{0}

Q. Electric field lines always point away from a positive charge and towards a negative point. In fact, electric fields originate at a positive charge and terminate at a negative charge. Why and how this happens so?

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