Recent content by BIT1749

i have read in a book that the surface integral has to be taken over a period of time.but what value should we put in place of charge??

gauss's theorem is also applicable to charge in motion.but how the surface integral has to be taken??

The source voltage is not in phase with the capacitor voltage as there are also resistances in the circuit. If nothing else, it is the internal resistance of the source. The source provides the current and the voltage across the capacitor lags behind that current. ehild you said that...

I think it is not correct to state that current leads the voltage by a phase of ∏/2.According to me,the answer to my question is that current lags voltage by a phase of 3∏/2. current=I Cosωt=I sin(wt+∏/2)=I Sin(wt-3∏/2)...

I know that there will be no current in the absence of voltage...but if we put τ=0 in the expression of current,we get a definite value but the voltage is zero.what does it physically imply (give physical interpretation)?

when an AC passes through a capacitor,if the expression for alternating voltage is V=E×Sinωτ,the expression for current is (I×sin(ωτ+∏/2)).This shows that current leads voltage by a phase ∏/2.Also at τ=0,we have voltage=0 but there is a finite value of current.In absence of voltage at T=0,where...

A BAR MAGNET has only two poles,north & south,just inside the ends .The ratio of magnetic length to geometrical length is always 0.85...why is not different for different BAR MAGNETS?

i asked about poles which are present only at two points,just inside the ends...not all over the magnet...

at the ends but a little inside...why the ratio of magnetic length to geometrical length of a bar magnet is always near 0.85?

Bar magnet... why are the magnetic poles of a magnet are located somewhere within the magnet,not at the ends?

electrostatic induction... when a conductor is charged by the method of induction,is its charge equal in magnitude to that of inducing charge or somewhat less?

Why is the moon's gravity so uneven?...give detailed explanation...