Learning Hub/Simulation Registry/Physics/HL/Chapter 11

Physics HL

Chapter 11: Current and Circuits

Build full circuit fluency from potential difference and resistance to power, emf, internal resistance, network reduction, and potential-divider design.

1 simulation entries

Simulation: Ohm and Resistivity Workbench

Vary voltage, resistor value, wire length, area, and resistivity multiplier to compare I = V/R with R = rho L/A predictions.

Appears in: 11.1 Potential Difference, Current, and Resistance, 11.2 Voltage, Power, and EMF, 11.3 Resistors in Electric Circuits, 11.4 Terminal Potential Difference and the Potential Divider

I = V/R

0.500 A

P = IV

6.000 W

rho

1.68e-8 ohm*m

R = rho L/A

0.067 ohm

Operating point at 12.00 V gives 0.500 A on the ideal straight I-V line. The wire-model current is 178.571 A when resistance comes from geometry and resistivity.

VI