Recent content by K Dhiraj Bhak

What happens To the force between 2 charges if a metal sheet or a dielectric sheet is kept in between the two charges ..(the charges are in vacuum)

Power loss doubt: power loss = I^2 R Power loss = V^2 / R But the 2 equations are contradictory ,,, from the first equation , we can say " MORE THE RESISTANCE MORE THE POWER LOSS" from the second equation ,,, it is the other way round... Why does this happen? ( usually the 1st equation is used...

ok, thanks!

suppose a solenoid has N turns What is the Flux through the Solenoid? similarly if a coil has N turns , what is the flux through the whole coil? i know how to find flux through a given AREA,,,like a coil with just 1 turn... How do u find flux for the entire system?

...OK , got it, thanks a lot people.

i agree that the 2 capacitors have different charges,,but when they are connected (as shown before the switch is ON) , won't the charges flow and redistribute so as to make the charges equal on both capacitors,,,,so that we can apply the series combination formula for these 2 charged...

this was actually from a problem...https://www.physicsforums.com/showthread.php?t=730605

Capacitors , why can't series combination be used in an open circuit?? they say we cannot apply series combination formula for the capacitors in an open circuit,,,but why?? why can't we find the equivalent capacitance in an open circuit?

so...why am I not allowed to combine the capacitors here??...is there any rule that capacitors cannot be combined in an open circuit??..if yes , why?

same question can be posed like this also... Two capacitors A and B with capacities 3 mF and 2 mF are charged to a potential difference of 100 V and 180 V respectively. The plates of the capacitors are connected as shown in the figure with one wire from each capacitor free. The upper plate of A...

Since the 2 capacitors are isolated from the other capacitor ( isolated b'cos the switch is off) , their initial charges remain constant as long as the switch is NOT ON. that's why i combined their charges into the equivalent capacitor...am i correct?

i added the charge contained by the individual capactors(3μF and 2F)..ie-->(300 μC + 360 μC)=660μC

Homework Statement Two capacitors A and B with capacitance 3 μF and 2 μF are charged to potential difference of 100 V and 180 V respectively. These two capacitors are connected to an uncharged capacitor of 2 μF using a switch as shown in the diagram. Determine the final charge on each...