User talk:Razor16190

Electric circuit
Introduction to electric circuits 1.1 units of measurement 1.2 system of units 1.3 powers of ten 1.4 conversion between levels of powers of ten 1.5 conversion between systems of units 1.6 symbols Units of measurement (important) Understand the basic concept and impact of units of measurement Apply proper units Make sure the applied unit is correct Example: V = d/t           V = velocity d = distance t = time Given that : 	d = 4000 ft		t = 1 min where : 1 mile = 5280 ft Solution :	4000 ft = 0.7576 mile 1 min = 1/60 h = 0.0167 h Therefore: V = d/t = (0.757 mi)/(0.0167 h) = 45.37mph

Systems of units

In the past there were 2 commonly used system of units: - English - Metric Metric is subdivided into 2: - MKS – meters, kilograms, seconds - CGS – centimeters, grams, seconds

Powers of ten Used to ease difficulty of math operations varying in size The notation used to represent a number that are integer powers of ten are as follows:

1 = 〖10〗^0                                        1/10 = 0.1 = 〖10〗^(-1)    10 = 〖10〗^1			     1/100 = 0.01 = 〖10〗^(-2)  100 = 〖10〗^2                                     1/1000 = 0.001 = 〖10〗^(-3) 1000 = 〖10〗^3                                   1/10000 = 0.0001 = 〖10〗^(-4)	Note: ▭(any number to the+power of 10 is>1) and vice versa. Simplifying powers of ten Examples : ▭(1/〖10〗^n =〖10〗^(-n) )  ▭(1/〖10〗^(-n) =〖10〗^n ) Products of powers of ten  ▭((〖10〗^n )(〖10〗^m )=〖10〗^((n+m)) ) Division of powers of ten ▭(〖10〗^n/〖10〗^m =〖10〗^((n-m)) ) Power of the power of ten ▭((〖〖10〗^n)〗^(m )= 〖10〗^((nm)) )

Conversion between levels of powers of ten It is necessary to convert one power of 10 to another. For instance, converting kHz to Mhz. This is necessary in order to fulfill certain needs. Examples: Converting 20kHz to Mhz. 20 x 〖10〗^3Hz = _____ x 〖10〗^6Hz Difference in decimal spaces = 6 – 3 = 3 d.s Therefore the decimal point has to be moved to the left hand side such that: □(←┴( .⏟0 ⏟2 ⏟0.0) ) Solution: 20 x 〖10〗^3Hz = 0.020 x 〖10〗^6Hz

Converting 0.01ms to µs 0.01 x 〖10〗^(-3)s = _____ x 〖10〗^(-6) Diff in d.s = 6 – 3 = 3 d.s Move decimal point to right hand side: □(→┴(0.⏟0 ⏟1 ⏟0.) ) Solution: 0.01 x 〖10〗^(-3)s = 10 x 〖10〗^(-6)s The direction of decimal point depends on the value of power of 10 used. Example: n^ x 〖10〗^xg = m^ x 〖10〗^yg ▭(if the value of x > y,then n < m and vice versa) Below are the list of prefixes and their respective values. SI prefixes 1000m	10n	Prefix	Symbol	Since[1]	Short scale Long scale Decimal

10008	1024	yotta- Y	1991	Septillion Quadrillion 1 000 000 000 000 000 000 000 000 10007	1021	zetta- Z	1991	Sextillion Trilliard 1 000 000 000 000 000 000 000 10006	1018	exa- E	1975	Quintillion Trillion 1 000 000 000 000 000 000 10005	1015	peta- P	1975	Quadrillion Billiard 1 000 000 000 000 000 10004	1012	tera- T	1960	Trillion Billion 1 000 000 000 000 10003	109	giga- G	1960	Billion Milliard 1 000 000 000 10002	106	mega- M	1960	Million 1 000 000 10001	103	kilo- k	1795	Thousand 1 000 10002/3	102	hecto- h	1795	Hundred 100 10001/3	101	deca- da	1795	Ten 10 10000	100	(none)	(none)	NA	One 1 1000−1/3	10−1	deci- d	1795	Tenth	0.1 1000−2/3	10−2	centi- c	1795	Hundredth	0.01 1000−1	10−3	milli- m	1795	Thousandth	0.001 1000−2	10−6	micro- µ	1960[2]	Millionth	0.000 001 1000−3	10−9	nano- n	1960	Billionth	Milliardth	0.000 000 001 1000−4	10−12	pico- p	1960	Trillionth	Billionth	0.000 000 000 001 1000−5	10−15	femto- f	1964	Quadrillionth	Billiardth	0.000 000 000 000 001 1000−6	10−18	atto- a	1964	Quintillionth	Trillionth	0.000 000 000 000 000 001 1000−7	10−21	zepto- z	1991	Sextillionth	Trilliardth	0.000 000 000 000 000 000 001 1000−8	10−24	yocto- y	1991	Septillionth	Quadrillionth	0.000 000 000 000 000 000 000 001