physics magnetic field 0.0 / 5 ? PhysicsMagnetic fieldsA2/A-levelOCR Created by: abbin003Created on: 19-12-19 18:19 what is a magnetic field a field surrounding a permanent magnet or a current carrying conductor in which magnetic objects experience a (magnetic) force 1 of 20 which direction does an arrow on a magnetic field line point it points from north to south 2 of 20 what are the shape of the magnetic field lines on a current-carrying wire concentric circles 3 of 20 which rule can you use to find the direction of the field the right hand grip rule 4 of 20 in the right hand rule what does the thumb point towards the direction of the conventional current 5 of 20 what is the difference between the magnetic field pattern for inside a solenoid compared to outside a solenoid inside a solenoid lines are parallel and equidistant causing uniform magnetic field but outisde it's like a bar magnet 6 of 20 what rule do you use to determine the direction of the force experienced by a current carrying conductor placed perpendicular to a magnetic field Fleming's left hand rule 7 of 20 state the equation to find the force (for a current carrying conductor) F= BILsinθ 8 of 20 what is magnetic flux density and state its unit it's the strength of the field and the units are Tesla(T) 9 of 20 what is the equation for force of a moving charged particle in a magnetic field F=BQv for an electron F=Bev (v is for velocity) 10 of 20 for a charged particle moving right angles to a uniform magnetic field (i.e moving in a circular path) state the equation for the radius r =mv/BQ 11 of 20 what is the equation when electric force= magnetic force (for a moving charged particle) v=E/B 12 of 20 define magnetic flux the product of the component of the magnetic flux density perpendicular to the area and the cross-sectional area 13 of 20 state the equation for magnetic flux and what is its unit Φ=BAcosθ it's unit is weber Wb 14 of 20 what is the magnetic flux linkage magnetic flux linkage= NΦ (N is number of turns) 15 of 20 what equation do you use if they ask you for the maximum magnetic flux the equation for magnetic flux linkage 16 of 20 when you're trying to find magnetic flux how do you measure the angle θ find the angle the magnetic field of flux density makes with the normal of the cross sectional area 17 of 20 state Faraday's Law The magnitude of the induced e.m.f is directly proportional to the rate of change of magnetic flux linkage 18 of 20 state the equation linking e.m.f with the change in magnetic flux linkage ε=-ΔNΦ/Δt 19 of 20 state lenz's law The direction of the induced e.m.f of current is always such as to oppose the change producing it 20 of 20
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