Search results

^^^^ !!!

ye fair it does work - the worked sols seemed rigged as they let u = cos instead.......

I rely on the LIATE and realised it does not work here? Can someone clarify....

yep - also go through the notification and highlight any dotpoints that have "conduct investigations" or something similar --> then try to sum up a list for accuracy, reliability and validity....

just love the site as it is...

@Thundermaster123 but if flux were constant there would be no emf and the question only lists the emf graph - ig what you mean is that the magnitude of lux is constant (but that still does not make sense since flux is a scalar quantity I believe)...

ye I was confused by that too - but then I realised that flux is a vector quantity.... Could someone clarify the answer? Thanks!!! Edit: flux density is vector and flux is scalar (the truth)

Question 6.13.2.9

Fair - cos we have this whole exercise in cambridge which instructs us to memorise the form so that we can apply it straight away instead of using trig sub

or rather can we just use U-substitution to prove these results?

Do we just memorise the integrals given above?

Tbh you will never really know it until you do it. I would suggest looking at this from this point of view: if you aren't performing well, then any small gain is something that you need to proud off. Just ignore your past marks and try to improve (by any extent). By doing so, the pressure of...

Will the there be essentially no change in flux when a conductive material is moved over a uniform magnetic field? I ask this with reference to the following question:

Hey guys what answer would you guys get for the question above!!!

Yh in essence what @idkkdi said. They have magnetic domains which are initially unorganised. But then the effectively align with the magnetic field lines, when flux is passed through them. Hence the magnetic field is confined to a particular direction and area (more flux linkage) with the...

lol just wanted a good flow diagram. But thanks anyways. Would be good for other members with similar doubts

Does anyone have a nice flow diagram which I can use to visualise how the voltages are increased and decreased at various lengths when electricity is transmitted from a power station to our consumer needs in the 240v AC outlet....

yh I get that - put when a commutator is in place, what is the point in which the current is reversed so as to maintain constant torque direction @Bob99 ..... just asking since this is when the rotor coil switches its electrical contacts with the brushes....

Does the current switch direction when the rotor coil is vertically upwards (when there is no electrical connection). Can someone explain this to me?