1. A resistor carries a current of at constant temperature and has a resistance of . What voltage appears across it?
2. At a circuit node, currents of and enter while one current leaves. What is the leaving current according to Kirchhoffβs current law?
3. A closed loop contains a source and two voltage drops of and . Which law is satisfied by this voltage balance?
What does Ohm's law state about voltage and current at constant temperature?
Voltage is directly proportional to current through a resistor.
What does Kirchhoff's current law say about currents at a node?
The algebraic sum of currents entering a node is zero.
What does Kirchhoff's voltage law state about voltages around a closed path?
The algebraic sum of all voltages around a closed path is zero.
How is electric current defined mathematically?
Electric current is the time rate of change of charge, .
What is the first step in nodal analysis?
Selecting a reference node.
What does mesh analysis assign to each mesh?
Mesh currents.
It covers the core concepts of Electrical Machines and Electronic Devices, organized by topic with the key definitions, explanations and takeaways, so it's easier to learn and remember.
Read the full study guide βThe practice quiz has 68 multiple-choice questions, each with an explanation. Use it to check what you know and find your gaps.
Take the quiz (68 questions) βThere are 80 flashcards on Electrical Machines and Electronic Devices, with a question on the front and the answer on the back. Try to recall each answer before you flip, and let spaced repetition bring back the ones you miss.
See all 80 flashcards βUpload a PDF or paste your notes. Revizly writes a study guide, a practice quiz and flashcards in about a minute.