Practice question · Sort into groups
Sort: voltage rise or voltage drop across each element (in direction of conventional current)?
Groups: Voltage rise · Voltage drop
- EMF source (traversed from − to +)
- Resistor (in direction of current)
- Battery (from + to − terminal)
- Resistor R with current I: drop = IR
- Battery (from − to + terminal)
- Capacitor being charged (in current direction)
Hints
- Ask whether the element supplies energy or consumes it.
- A source raises the potential; a passive element lowers it.
Show the answer
Voltage rise: Battery (from − to + terminal), EMF source (traversed from − to +)
Voltage drop: Resistor (in direction of current), Resistor R with current I: drop = IR, Battery (from + to − terminal), Capacitor being charged (in current direction)
Why
Batteries provide voltage rises; resistors and capacitors cause drops.
Practise Kirchhoff's Laws and Circuit Analysis
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