Basic Mathematics for Television and RadioPrentice-Hall, 1953 - 405 σελίδες |
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Σελίδα 140
... resistance in ohms . Expressed in symbols , this formula is E = IR where E electromotive force I = intensity of current = = 40 , what is E ? = 456 , how much current flows ? If I R = resistance 3 and R 7. If E = 220 and R 8. If the ...
... resistance in ohms . Expressed in symbols , this formula is E = IR where E electromotive force I = intensity of current = = 40 , what is E ? = 456 , how much current flows ? If I R = resistance 3 and R 7. If E = 220 and R 8. If the ...
Σελίδα 141
... resistance of several resistances con- nected in parallel is R = 1 1 / R1 + 1 / R2 + 1 / R3 + · · + 1 / Rn . • Rn are the where R is the equivalent resistance , and R1 , R2 , R3 parallel resistances . All resistances are measured in ...
... resistance of several resistances con- nected in parallel is R = 1 1 / R1 + 1 / R2 + 1 / R3 + · · + 1 / Rn . • Rn are the where R is the equivalent resistance , and R1 , R2 , R3 parallel resistances . All resistances are measured in ...
Σελίδα 370
... resistance of the combination 3000 ohms . 13. The change in resistance of a resistor caused by a change in temperature is stated by the equation R1 = Ro [ 1 + a ( T1 — To ) ] 1 where Ro is the original resistance , R1 is the new resistance ...
... resistance of the combination 3000 ohms . 13. The change in resistance of a resistor caused by a change in temperature is stated by the equation R1 = Ro [ 1 + a ( T1 — To ) ] 1 where Ro is the original resistance , R1 is the new resistance ...
Περιεχόμενα
CHAPTER PAGE 1 ADDITION SUBTRACTION MULTIPLICATION AND DIVISION IN ARITHMETIC | 3 |
DEFINITIONS AND SYMBOLS | 12 |
INVOLUTION AND EVOLUTION IN ARITHMETIC | 15 |
Πνευματικά δικαιώματα | |
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a-c circuit adjacent angles algebraic amperes answer arithmetic Axiom base bisector called Chapter Check chord circle circumference coefficient complex numbers Construct COROLLARY cosine curve decibel decimal point denominator diameter distance divided division divisor Draw engineering equal example exponent expression factor figure formula fraction frequency functions geometry given graph impedance inches inscribed interior angles isosceles logarithms magnitude mathematical measure monomial Multiply negative number nth root obtained Ohm's law ohms parallel parallelogram perpendicular polygon polynomial positive Postulate Problems Prove quadratic quantity quotient R₁ radians radio radius ratio reactance regular polygon represented resistance resistor resonant right angle right triangle rotation Simplify sine wave slide rule solution Solve the equation square root straight line subtract tangent Theorem triangle ABC trigonometric functions trigonometry unit vector vertex vertical voltage volts zero