PEM fuel cells have good efficiency and low operating temperature and could play an important role in power generation in the future. They are currently the leading technology for automotive ...

The filament lamp is a common type of light bulb. It contains a thin coil of wire called the filament. This heats up when an electric current passes through it and produces light as a result. Taking ...

Measuring the actual collector-emitter breakdown voltage is practically impossible without destroying the device. Therefore, BVCES is the collector-emitter voltage at which no more than the specified ...

If the temperature of a metal conductor increases, the ions of the metal vibrate more vigorously. Hence, for a metal, resistance increases with increasing temperature. Often the increase in ...