Multimeter - Best gift idea for all occasions ideal for Electrical Tradesmen, Electricians, Engineers, Technicians and Hobbyist

Should you ever find it tough to shop for a perfect gift idea that will be appreciated by every electrical or electronic technician, tradesmen, hobbyist or apprentice for Christmas, birthdays or graduation present, but you are on a very tight budget and everything you can find just seems to be a bit expensive, or perhaps you might not have the slightest technical idea about anything that has to do with tools and gadgets at all.

Example of electrical computation formulas for electrical calculation involving the function and operation of DC motors

Example 1: The field winding of a shunt DC (Direct Current) motor has a resistance of 110 ohms, and the emf (electro-motive force) applied to it is 220 volts. What is the amount of power expended in the field excitation?