Basic Mathematics for Television and Radio |
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Σελίδα 79
This problem illustrates Ohm's law applied to a battery of one cell : E I = R + r ( 8 ) where I = current in amperes E R - electromotive force of cell in volts = external resistance in ohms T = internal resistance of cell in ohms A one ...
This problem illustrates Ohm's law applied to a battery of one cell : E I = R + r ( 8 ) where I = current in amperes E R - electromotive force of cell in volts = external resistance in ohms T = internal resistance of cell in ohms A one ...
Σελίδα 140
In a d - c circuit , the electromotive force in volts is equal to the product of the current in amperes and the resistance in ohms . Expressed in symbols , this formula is where E I E = IR = electromotive force = R = intensity of ...
In a d - c circuit , the electromotive force in volts is equal to the product of the current in amperes and the resistance in ohms . Expressed in symbols , this formula is where E I E = IR = electromotive force = R = intensity of ...
Σελίδα 141
If the current flow is 0.45 ampere , what is the total wattage of 5 electric lights , of 243 ohms each , in series , across 550 volts ? 16. How much line current flows through a 660 - watt heater of 120 volts ? 17.
If the current flow is 0.45 ampere , what is the total wattage of 5 electric lights , of 243 ohms each , in series , across 550 volts ? 16. How much line current flows through a 660 - watt heater of 120 volts ? 17.
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Περιεχόμενα
CHAPTER PAGE 1 ADDITION SUBTRACTION MULTIPLICATION AND DIVISION IN ARITHMETIC | 3 |
DEFINITIONS AND SYMBOLS | 12 |
INVOLUTION AND EVOLUTION IN ARITHMETIC | 15 |
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algebraic angle answer applied arithmetic Axiom base called Chapter Check circle circuit circumference coefficient common complex condition Construct COROLLARY curve decimal definition denominator difference direction distance divided division Draw drawn electrical engineering equal equation example exponent expression fact factor figure formula fraction frequency functions geometry given greater illustrated inches indicated involved length letters logarithms magnitude mathematical means measure method Multiply necessary negative Note obtained ohms operation parallel perpendicular places polygon positive possible practice Problems Prove quadratic quantity quotient radio radius ratio represented resistance result right angle root rule shown sides similar Simplify sine solution Solve square statement straight line substituted subtract Theorem triangle unit unknown usually vertical voltage volts wave zero