why is that in refraction both refraction and reflection takes place but in case of total internal reflaction only reflection takes place but not refraction?
If i connect the positive terminal of a 5 volt battery to positive terminal of 10 volt battery and the negative terminals of both batteries are also connected without using any resistance or any other components in between what will happen to the two batteries?. Will the one with higher voltage...
In an inverting opamp let the output be feedback to inverting input through a feedback resistor Rf. We write the direction of flow of current from input terminal to output terminal in the feedback resistor Rf. But if this direction is correct then how can we say that input is fed back?? it seems...
ideally input current of an opamp is 0. If input current is zero then how is that the opamp can give an output?
is it that in a real opamp a very small quantity of current flows?
while finding Vrms or Vavg we use integration and we use d(wt) and integrate between the limits 0 to 2pie. When 'w' is a constant how can we take it as d(wt).and if we take as d(wt) only then why are the limits not changed to 0 to 2(w)(pie)?
two ideal diodes are are connected in parallel. this combination is connected across an ac source. the diodes r such that if one of them is forward biased other is reverse biased.
now in the positive half cycle let us take that 1st diode if forward biased and the second reverse biased. if the...