Electricity & Circuits

15 interactive Physics simulations on electricity & circuits.

Semiconductors – energy bands, doping and the p–n junction Physics · Electricity & Circuits Compare the energy band diagrams of a conductor (copper), a semiconductor (silicon, band gap 1.12 eV) and an... Ages 17–18
AC circuit construction kit – build RLC circuits Physics · Electricity & Circuits Build any circuit by drag and drop from an AC source, batteries, wires, resistors, light bulbs, switches,... Ages 17–18
Wheatstone bridge and metre bridge – resistance and resistivity Physics · Electricity & Circuits A metre bridge: a uniform 100 cm wire, a resistance box R in one gap and the specimen X in the other. Slide the... Ages 16–17
Fields and signals – gravitational field, radio waves, electronics Physics · Electricity & Circuits Three physics topics in one template, switched with the topic parameter. Gravitational field: drag to change a... Ages 16–17
I–V characteristics – resistor, filament lamp, diode and LED Physics · Electricity & Circuits A virtual version of the I–V characteristics practical: a variable d.c. supply, an ammeter in series and a voltmeter... Ages 16–17
Moving-coil galvanometer – conversion to ammeter, voltmeter and ohmmeter Physics · Electricity & Circuits A moving-coil galvanometer in a radial magnetic field: the torque NBIA on the coil is balanced by the spring torque... Ages 16–17
Ohm's law for a complete circuit – internal resistance Physics · Electricity & Circuits A closed circuit made of a source (EMF E, internal resistance r) and a rheostat R. Drag the slider directly on the... Ages 16–17
Using a multimeter – voltage, current, resistance, continuity and diode test Physics · Electricity & Circuits A virtual 3½-digit digital multimeter with a range dial and four sockets (10A, mA, COM, VΩ). On five test boards,... Ages 16–17
Diode Rectifier Circuit Physics · Electricity & Circuits A diode conducts in only one direction, turning an alternating voltage into a bumpy direct voltage. Compare... Ages 16–17
Series RLC Circuit and Resonance Physics · Electricity & Circuits A series R, L, C circuit driven by an AC voltage: graphs of u and i show their phase difference, alongside a phasor... Ages 17–18
Charging and discharging a capacitor – measuring the RC time constant Physics · Electricity & Circuits A virtual lab circuit with a source of EMF E, a resistor R, a capacitor C and a two-way switch K: move K to 1 to... Ages 16–17
Ohm's Law – Two Resistors in Series Physics · Electricity & Circuits A source U with two resistors R1 and R2 connected in series. The ammeter reads I = U/(R1+R2); the electrons move... Ages 14–15
Heating effect of current – the H = I²Rt experiment Physics · Electricity & Circuits A heater coil in a calorimeter of water: set the current and time, read the thermometer and check H = I²Rt = mcΔT by... Ages 16–17
Electron drift in a metal – drift speed, mobility and resistivity Physics · Electricity & Circuits Free electrons in a metal wire move randomly at about 10⁵ m/s and collide with the vibrating lattice ions; a current... Ages 16–17
Capacitors – capacitance and capacitors in circuits Physics · Electricity & Circuits Change the plate area, the plate separation and the battery voltage to see the capacitance C, charge Q and stored... Ages 16–17