Look inside a battery to see how it works. Select the battery voltage and little stick figures move charges from one end of the battery to the other. A voltmeter tells you the resulting battery voltage.

Build circuits with batteries, resistors, ideal and non-Ohmic light bulbs, fuses, and switches. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. View the circuit as a schematic diagram, or switch to a lifelike view.

查看一个电池，看它是如何工作的。选择电池电压，将小棒从电池的一端移动到另一端。电压计将会告诉你电池电压的结果。

2016年8月18日 · This web page contains a simulation that allows users to explore a model of charge flow and resistance in a simple circuit. The resistance in the circuit and voltage of the battery can be adjusted. The resultant changes in the current, charge density, and heating of the resistor are shown.

PhET is supported by and educators like you. Look inside a resistor to see how it works. Increase the battery voltage to make more electrons flow though the resistor. Increase the resistance to block the flow of electrons. Watch the current and resistor temperature change.

PhET is supported by and educators like you. Look inside a battery to see how it works. Select the battery voltage and little stick figures move charges from one end of the battery to the other. A voltmeter tells you the resulting battery voltage. Do the small blue spheres represent positive or negative charges?

Look inside a resistor to see how it works. Increase the battery voltage to make more electrons flow though the resistor. Increase the resistance to block the flow of electrons. Watch the current and resistor temperature change.

PhET is supported by and educators like you. Look inside a battery to see how it works. Select the battery voltage and little stick figures move charges from one end of the battery to the other. A voltmeter tells you the resulting battery voltage. Do the small blue spheres represent positive or negative charges?

Explore how resistors and batteries work in a circuit, and observe changes in current and temperature.

Look inside a resistor to see how it works. Increase the battery voltage to make more electrons flow though the resistor. Increase the resistance to block the flow of electrons. Watch the current and resistor temperature change. Sample Learning Goals Are the blue spheres moving through the circuit positive or negative charges?