Series and parallel: what actually changes when you add a lamp?

Year 11 Physics · series R = R1 + R2 + R3 · parallel 1/R = 1/R1 + 1/R2 + 1/R3 · V = IR · lamp brightness drawn from P = I2R, not from current

Build the circuit

Change one thing and watch every reading move
Lamps

The circuit

Meter positions are the buttons on the right

Meters

Ammeter at before Lamp 1 1.000 A
Voltmeter across Lamp 1 6.00 V

Move the ammeter around the loop. Every reading you take is listed here.

Total resistance of the whole circuit 12.00 Ω starting point supply current 1.000 A
LampRCurrent IVoltage VPower I2RBrightness
Predict first

Commit to an answer before you press anything.

Series, two lamps, 12.0 volts. Total resistance 12.00 ohms and the supply delivers 1.000 amperes. Each lamp drops 6.00 volts and dissipates 6.00 watts.