Electrical engineering problems with answers
Electrical engineering problems on STEMinute start from the basics of circuits: voltage, current, resistance and power, series and parallel networks, capacitors and filters, and simple AC ideas. Each problem asks for one number you can compute with Ohm's law and a few other rules. Draw the circuit, label every voltage and current, simplify the network step by step, and check that power adds up. Try each day's round first, then read the answers and the main steps below.
All Electrical engineering days
Oct 15, 2026
- A torch battery
- Heat in a resistor
- How many switches?
Oct 14, 2026
- Counting a high output
- Two side by side
- Three parallel branches
Oct 13, 2026
- A light bulb for a month
- Choosing an input
- A divider with a load
Oct 12, 2026
- Frequency from a scope
- Adding in binary
- How long a battery lasts
Oct 11, 2026
- Voltage across a coil
- A battery pack
- Find the hidden resistor