Module 04 — Circuits and Current · quiz worth 35 pts · 2026-09-07
The big ideaThe DBA is a live conversation about Module 04. Prepare to explain a relationship, work a short calculation aloud, compare circuit designs, and name the topics discussed in the reflection afterward.
How to answer aloud
State the idea
Give the direct answer in one sentence. Do not begin with a long definition if the question asks for a comparison or result.
Use one reason or equation
Point to the path, field direction, formula, unit, or circuit component that supports the answer.
Connect it to an observation
Mention what a compass, bulb, ammeter, voltmeter, or open switch would show when that fits the question.
Say what you are unsure about
The course tells you to bring questions. Ask for clarification instead of guessing if a detail is still fuzzy.
Prompt bank: charge and fields
Practice aloud: Why do like charges repel and opposite charges attract? What does an electric field measure? How does distance change Coulomb force? What evidence shows that current in a wire creates a magnetic field? Use the right-hand rule: thumb points with conventional current, curled fingers show the magnetic-field direction. Reversing the battery reverses current and compass deflection.
Prompt bank: circuits and calculations
Practice aloud: What must a circuit have for charge to flow? What happens to current if voltage rises while resistance stays fixed? What happens if resistance rises while voltage stays fixed? How do a voltmeter and ammeter differ? Why does a resistor reduce current? What do a capacitor's plates and dielectric do? Be ready to calculate with Ohm's law and the power equation.
Formulas to say with units
Ohm's law
V=IR
V in volts, I in amperes, R in ohms.
Current
I=RV
At fixed voltage, more resistance means less current.
Power
P=IV
Power is measured in watts.
Electric field
E=qF
Electric field is measured in newtons per coulomb.
Prompt bank: series and parallel
A series circuit has one path. A break stops current everywhere, and adding resistance in series increases total resistance. A parallel circuit has more than one path. One open branch does not stop complete branches; with the same components and voltage, parallel organization has lower overall resistance and higher total current than series. A series/parallel circuit combines both arrangements.
Reflection after the call
The 04.07 submission asks for the date you spoke with your instructor and a list of topics discussed. Write those details after the actual conversation. Do not paste the whole review list. Record what was really discussed, and include any correction or follow-up the instructor gave you.
Oral-rehearsal check
Answer each item out loud before selecting a choice. The goal is to hear whether your reason follows your answer.
