Electrical Theory Flashcards
6 cards from real EIAT and NEIEP Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Electrical Theory flashcards as text
What is the formula for calculating electrical power?
Answer: P = V × I
Electrical power (in watts) is calculated as P = V × I, where V is voltage and I is current.
In a parallel circuit, the voltage across each branch is:
Answer: The same across all branches
In a parallel circuit, all branches share the same voltage because they are connected between the same two nodes.
An inductor opposes changes in:
Answer: Current
An inductor opposes changes in current by generating a back-EMF (electromotive force) that resists the change.
What is the relationship between conductor cross-sectional area and resistance?
Answer: Larger area means lower resistance
A larger cross-sectional area provides more paths for electron flow, reducing overall resistance.
Which material is the best electrical conductor?
Answer: Silver
Silver has the highest electrical conductivity of all metals, though copper is more commonly used due to cost.
What does EMF stand for in electrical theory?
Answer: Electromotive Force
EMF (Electromotive Force) is the energy provided by a source per unit charge and is measured in volts.
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