alternating current phenomena

Do we use dry cells for operating electrical appliance? It is not impossible to tap continuous supply of energy from electrochemical cells. Electrical circuits in homes, factories and offices receive such energy form local power companies. In most countries the energy is supplied via oscillat..

..

If the current flows always in the same direction, it is called 'direct current'. Direction current is represented as DC or dc. The current derived from a cell or a battery is direct current - since it is unidirectional. The positive and negat..

If the current flows always in the same direction, it is called 'direct current'. Direction current is represented as DC or dc. The current derived from a cell or a battery is direct current - since it is unidirectional. The positive and negative te..

Summary - An alternating current is that which changes continuously in magnitude and periodically in direction. It can be represented by a sine curve or a cosine curve i.e., I = I o sin w t or I = I o = cos w t Here, I o is peak value of current and I is instantaneous ..

Direct Current - When the current flows in the same direction it is called 'direct current' or DC The current derived from a cell or battery is unidirectional. So it is a DC source It is represented in an electrical circuit as The voltage V/s ti..

Voltage or current in simple direct current electric circuits Problems involving Ohm's law Formula for power (rate of energy dissipation) in any resistive circuit element Properties of transistors and their role in electric circuits Electric fields Magnetic fields Di..

Voltage or current in simple direct current electric circuits Problems involving Ohm's law Formula for power (rate of energy dissipation) in any resistive circuit element Properties of transistors and their role in electric circuits Electric fields Magnetic fields Di..

Double the current for double the time will deposit 0.5 x 2 x 2 mole i.e., 2 mole of silver. ..

Average value of the alternating e.m.f over a half cycle is that steady e.m.f which will send the same amount of charge in a circuit in a time of half cycle as is sent by the given alternating e.m.f in the same circuit in the same time. Following the above definition, it can be ..