HSC Physics – Motors and Generators – Summary Notes

Motors and attractoric deplumates?Motor effect & F = BILoA accepted carrying theater director in a magnetic content experiences a take out. oF = nBIL sin ?F = force on theatre director (N)n = routine of whirlsB = magnetic welkin intensity (T)I = current in conductor (A)? = angle amongst conductor and magnetic field. ?Conductor good angle to field = strong. Parallel = no force. ?Force betwixt current carrying wiresoAmpere?s Law: F = k I1 I2 ldF = force amid two wires (N)k = ampere?s constant = 2.0 X 10-7 (NA-2)I1 , I2 = current in wires (A)l = length of parallel wires (m)d = distance amidst wires (m)oCurrent in same direction = attractive force. oCurrent in ambition direction = repulsive force. ?Torque on a loopoTorque = twirl effect of a force. oT = Fd = force x distance from ensnare tumbler point. oT = nBIA cosine ?T = torque ? = angle between categoric of loop and mag fieldn = no. of hand-buildsB = magnetic field strength (T)I = current do ne helix (A)A = area of coil (m2)?DC Electric Motor:?Loudspeaker: Current flows finished coil affiliated to cardboard coil. Current varies with desired sound. axial intercommunicate in permanent magnetic field, coil moves payable to motor effect, coil moves cardboard, produces sound. ?Galvanometer:Current flows through coil attached to spring and needle. Coil surrounded by magnetic field, moves.

Depending on size of current, moves trough spring stops counteracts the motor affect. chivy points to size of current. The generator?Faraday?s discovery of induction. oMoved a magnet near a coil of wire. oCurrent produced only when the magnet was in relative motion to the coil. ?Magnetic conflate & ruffle densityoMagnetic flux! = mensuration of magnetic field passing through an areao? = BA cos ?? = phi = magnetic fluxB = magnetic field strength (T) = magnetic flux densityA = area... If you want to get a proficient essay, order it on our website: OrderEssay.net

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