What are the four basic units of electricity?

Answer 1

Ohm's Law describes the relationship between current ( symbol: I ) and potential difference( symbol: E, V, or U ) under very specific circumstances. It states that 'the current passing through a conductor is proportional to the potential difference across the ends of that conductor, providing various physical conditions, such as temperature, remain constant'.

Another way of expressing Ohm's Law is to say that it applies to a conductor (or device) whenever 'the ratio of potential difference to current is constant for variations in potential difference'. The ratio of potential difference to current is known as resistance ( symbol: R ).

It should be noted that Ohm's Law is NOT a universal law, and only applies as described in the second paragraph, above. In fact, it applies in very few cases. Hardly any conductors obey Ohm's Law unless their temperatures are held constant (which doesn't normally happen in practice!) and devices such as diodes, etc., do not obey Ohm's Law.

So there are three, not four, quantities involved with Ohm's Law: potential difference (which is also known as voltage) expressed in volts (symbol: V), current expressed in amperes (symbol: A), and resistance expressed in ohms (symbol: the Greek upper-case character 'omega').

Answer 2

the 3 types are......... power outlet a light bulb thats all i can think of

Answer 3

ohms,watts,current,resistance