## Incandescent light bulb (heat dissipation of resistance)

Resistance Materials have different degrees of impeding the flow of electric current depending on their type and shape. Most materials, except metals, do not conduct current well. On the other hand, metals have low resistance and allow current to flow … more

## Electric Current, Conductor, Insulator

Electric voltage(Regions of a positive or negative charge, such as those at the terminals of a battery) force electrons through a conductor. Electrons that have negative charges can be moved around a circuit. Originally, the current was thought to flow … more

## Transmitting Electricity at High Voltages

Description of the simulation You can compare the two cases with each other. The power plant produced is assumed to be $$22,000V \times 1A = 22,000W$$. You can change the voltage and resistance of the transmission line respectively. … more

## Structure of an ammeter

Ammeter The strength of the current in the electrical circuit is measured using an ammeter. There is a rotor with a coil wound inside the ammeter. When the current flows through the ammeter, the coil and the rotor will have … more

## Serial Parallel Circuit 2

In parallel circuit, The current splits up when it comes to a branch. The current in all the branches adds up to the current in the main part of the circuit. If one bulb breaks, the bulbs in the other … more

## Serial Parallel Circuit

In parallel circuit, The current splits up when it comes to a branch. The current in all the branches adds up to the current in the main part of the circuit. If one bulb breaks, the bulbs in the other … more

## Charge Conservation

In the serial circuit, The current is the same everywhere. In the parallel circuit, The current splits up when it comes to a branch. The current in all the branches adds up to the current in the main part of … more

## Resistance Connection

Resistance is analogous to a toll-gate, meaning that it limits the flow of current. Please note that excessive analogy may cause misconceptions. (The cars in the simulation are crowded out, but the actual charges are evenly distributed throughout the conductors.) … more

## Electric Potential 3

What is the voltage value of the voltmeter? Voltage distribution in series connection When two or more resistors are connected in series, the sum of the resistors’ voltages becomes the total voltage. Therefore, the resistors divide the supplied voltage according … more

## Ohm’s Law

Ohm’s Law When you connect the light bulb and the battery with a wire, the bulb lights up. This is because free electrons with negative charges (-) move along the wire, and this flow of charges is called current. It … more

## Electric Potential 2

Battery and Load In an electrical circuit, the battery maintains a voltage difference to allow current to flow through the circuit. In an electric circuit, the place where energy is consumed is called a load. Generally, in school labs, the … more

## Electric Potential

Battery and Load In an electrical circuit, the battery maintains a voltage difference to allow current to flow through the circuit. In an electric circuit, the place where energy is consumed is called a load. Generally, in school labs, the … more