Entropy, the measure of a system’s thermal energy per unit temperaturethat is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a...
current or voltage we measure for AC are alaways rms(root mean square) value not the actual magnitude so 220 volt ac(rms)= 220*sqrt(2)=311 volt but 220 volt DC alaways gives the magnitude...
ELECTRIC FIELD : The space or region around the charge in which its effect can be felt is called electric field. Electric field is denoted by 'E'. In other words, if we...
Ohm's law: "The potential difference (voltage) across an ideal conductor is directly proportional to the current through it." The constant of proportionality is called resistance'R'. Ohm's law is given...