Preview COREN prep
Engineering fundamentals that hold across disciplines — computed circuit, statics, unit-conversion and engineering-economics questions, plus a professional code-of-conduct fact bank — for COREN registration candidates.
Sample lesson
Ohm's Law & Power
Computing voltage, current and power from Ohm's Law.
Ohm's Law is a fundamental principle in electronics that relates voltage (V), current (I), and resistance (R). It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance.
Suppose a circuit has a resistance of 10 ohms and the voltage across it is 5 volts. To find the current, apply Ohm's Law: I = V / R = 5V / 10Ω = 0.5 A. Thus, the current flowing through the circuit is 0.5 amperes.
Read-only preview. Quizzes and progress tracking start in the full course.
What a mock looks like
COREN-style Mock Exam
50 minutes total, with sections timed individually.
- Engineering Mathematics & Mechanics0 min
- Circuits & Power0 min
- Professional Practice0 min
Two forces act on a rigid beam pivoted at one end: 20 N at 3 m from the pivot, and an unknown force at 2 m from the pivot, in equilibrium. What is the unknown force?
- 30 N
- 20 N
- 60 N
- 15 N