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What is an Ohm
An Ohm is the unit of electrical resistance in the International System of Units (SI). It is represented by the symbol Ω and is named after the German physicist Georg Simon Ohm. One Ohm is equal to the resistance of a conductor in which a current of one ampere is produced by a potential difference of one volt.
Standard measurement of energy
The standard measurement of energy is the joule (J).
Conventional direction of current?
The conventional direction of current is from positive to negative.
How is work calculated
Work is calculated by multiplying the force applied to an object by the distance over which the force is applied. Mathematically, work (W) is equal to the force (F) multiplied by the displacement (d) in the direction of the force. Therefore, the formula for calculating work is W = F * d. The unit of work is joules (J).
Note 
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