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Physics4BEquationSheet

Physics4BEquationSheet - PHYSICS 4B EQUATION SHEET kq1q2...

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1 PHYSICS 4B EQUATION SHEET 1 2 12 12 2 ˆ kq q r F r Coulomb’s Law q F E Electric Field r E ˆ 2 r q k Electric Field due to a point charge r E ˆ 2 r dq k Electric Field due to a continuous charge 2 k E r E-field due to infinite line of charge 2 o E E-field due to an infinite plane of charge o E E-field just outside a conductor E E dA Electric Flux enc E o q E dA Gauss’s Law p qd Electric Dipole Moment τ p E Torque on Electric Dipole U p E PE of electric dipole B B A A U V V V d q E s Electric Potential Difference U qV Electric Potential Energy 1 2 kq q U r Electric Potential Energy kq V r Electric Potential due to a point charge dq V k r Electric Potential due to an extended body of charge E V Relation between V and E Q C V Capacitance o A C d Capacitance for Parallel- Plate Capacitor 1 2 eq C C C Capacitors in Parallel 1 2 1 1 1 eq C C C Capacitors in Series 2 1 2 o E Energy Density in an E-field o C kC Capacitance with Dielectric o E E k E-field with Dielectric 2 1 2 U CV Energy in a Capacitor dQ I dt Electric Current I J A Current Density J E Ohm’s Law R A Resistance V IR “Ohm’s Law”
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