AP Physics 2 / Unit 11: Electric Circuits
11.2 Simple Circuits
Notes
A circuit needs a closed loop and a source of potential difference (battery). An open circuit has no current; a short circuit bypasses resistance.
Practice
A bulb won't light if:
No complete path.
A battery provides:
Energy per charge.
A short circuit can be dangerous because:
Little resistance.
Ready for more? Take the Unit 11 test.