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Self-Test 1 Q&A 3-4

Self-Test Questions Volume 1

QuestionAnswer
What is the relationship of the current to the voltage and resistance in a DC circuit according to Ohm’s law? The current in amperes is equal to the emf in volts divided by resistance in ohms.
What are the three characteristics of a DC-series circuit? The total resistance is the sum of the individual resistors. The same current flows in each part of the circuit. The applied voltage will divide among the resistors according to their resistance.
What is the rule that pertains to the total current in a parallel circuit? In a parallel circuit, the total current equals the sum of the current in the branches.
Define Kirchhoff’s voltage law. The algebraic sum of the voltages around a closed loop must equal zero.
The ability to do work measured in joules. Energy
The production of motion against a resisting force measured in joules. Work
The rate of doing work measured in watts. Power
That which produces a change in motion of a body measured in dynes. Force
What formula is used to compute power in a DC circuit when you only know resistance and current? P = I^2 x R
In a parallel circuit having four equal lamps, with an applied voltage of 120 volts and a total current flow of 4 amperes, what is the power consumed at each lamp? 120 watts.
Created by: RenegadeWolf
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