Explain how a cell produces an electric current?

Answer 1

Electrical pressure, called "electro-motive force" (EMF), is what causes current to flow in an electrical circuit. EMF is measured in volts.

Pressure and the quantity of electricity transmitted can be considered analogous to pressure and quantity of water flowing in pipes: the longer the distance, the higher is the pressure (called the "voltage" for electricity) that is necessary to pump the flow of water (called the "flow of electrical charge, which is also known as the "electric current").

That is why, for long distance transmission, high pressure (voltage for electricity) is required, failing which, the current - and therefore the power - will not reach the intended destination. Instead, it will be lost (also called "dissipate") along the way.

We can think of electrical current as the quantity of electricity which will be drawn from the pipeline (= cables for electricity) at the pressure (= voltage) required.

Answer 2

The potential difference between two point causes the electrons of the conducting medium to be attracted towards the positive ends and hence the currents flows from the positive end to the negative end

Answer 3

To be precise, by itself it doesn't.

A 'cell' produces a voltage by chemical means,

a voltage is a sort of gradient down which current would "like" to flow,

Whether or not a current does flow depends on the conductivity between the two terminals of the (original) cell.

Answer 4

The cells burns food and makes electromagnetic waves which makes currents when detected by a nerve.

Answer 5

It has a positive and negative charge.

Answer 6

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