I'm about 3 weeks into studying for my Technician exam using various online practice tests and I keep getting tripped up on the math questions. I need to get 26 out of 35 questions right to pass (74%), but the Ohm's law and power calculations are killing my practice test scores.

Does anyone have good mnemonics or study tricks for remembering the formulas? I understand the concepts but when I see a question asking for current when given voltage and resistance, I second-guess myself on whether to use I=E/R or one of the other variations.

• Ohm's Law relationships (V, I, R)
• Power calculations (P=IE, P=I²R, P=E²/R)
• Frequency/wavelength conversions

The "magic circle" diagram saved me! Draw a circle, put P at the top, then I and E on the bottom. Cover what you want to find and the formula appears. For Ohm's law, use the PIE circle - P at top, I and E at bottom. Remember, you can get up to 9 questions wrong and still pass, so don't stress if a few math problems stump you.

I struggled with the same thing! What helped me was making flashcards with the formula on one side and a sample problem on the other. Practice tests that give you feedback on areas you need help with are crucial - they'll show you exactly which formulas you're getting wrong.

During your actual exam, don't skip math questions - take a guess! You have a 25% chance of getting it right when you guess. For frequency/wavelength, remember 300 divided by frequency in MHz gives wavelength in meters. Practice that one until it's automatic.