TYPES OF ELCTRICITY

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ELECTRICITY: is an  invisible force that can produce heat ,light , motion etc and many other physical effects the electricity energy is available in two forms (d.c) & (a.c)
 (D.C) means direct current   AND (A.C)means alternating current
DIRECT CURRENT (D.C)
the direct current is that current which do not change direction it always flows in one direction from positive terminal  to negative terminal of the source the magnitude of the direct current may have or not have a constant value and thus direct current has constant magnitude with time its purest form of direct current 

DIRECT CURRENT WAVE

ALTERNATING  CURRENT  (A.C)
the alternating current or voltage which changes its magnitude and direction with time regularly is known as alternating current 
an alternating current can also be defined as that which changes its magnitude in one direction from zero and then going through similar variation but in opposite direction produce by a.c alternating current 

(AJIT KUMAR)



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