NOT many years ago a certain type of journalist used to compare and contrast the theorist and the practical man, to the demolition of the former and the apotheosis of the latter. Fortunately, such an ...

Why is sparking observed when an electric appliance is suddenly switched off? A 60V, 10W lamp is to be used on AC source of 100V,60Hz. Calculate the inductance of the choke coil required to be put in ...

Alternating current circuits improve the versatility and usefulness of electric power systems. In the late 1800s, Nikola Tesla demonstrated phenomena with alternating current (AC) electricity that ...

Electrical circuits and systems lie at the very heart of modern technology, underpinning applications that range from power supply units and embedded systems to high‐speed communication networks and ...

CBSE class 12 physics chapter wise notes on chapter Alternating Current are available in this article. These notes are important for CBSE class 12 Physics board exam 2017. CBSE class 12 Physics ...

In domestic devices, energy is transferred from the batteries or ac mains to the energy of the motors and heating devices. A plug connects a device to the mains electricity supply. The cable between ...

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When picking a switch to use in electrical design, many people believe they can use any switch, provided its current rating is more than the maximum load in the circuit. This, of course, isn’t true.

Inductance is the link between electric circuits and magnetic fields. Voltage and current sine waves are in-phase when they peak and cross the zero axis at the same time. However, this rarely happens ...

When shopping for loudspeakers or headphones, most consumers don’t even look at the impedance of the products they are considering. Do they need to? What is Impedance? Glad you asked. Most consumers ...