lecture 2 - Potential energy Electrical PotentialE E Energy...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Potential energy E E Energy can be stored in an electric field in a way analogous to that in the gravitational field. Recall: P. E. grav = U = -Work hi to hf = mgh E E So, U elec = - W e-field Electrical Potential Energy Plotting Potential 1 Electrical Potential
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Potential Energy from Multiple Charges le of superposition . Energy is NOT a vector. So we can simply add the potential energy contribution from each charge. ion distance between charges 1 and i. U elect = k q 1 q 2 + q 1 q 3 + q 1 q 4 + . . . + q 1 q i I r 12 r 13 r 14 r 1 i Electric Potential and Potential Difference E E Note the Electric Force vector points toward lower electric potential energy. E E Electric Field vector points in direction of lower Electric Potential (V). U elec = qV so W e l e c = qV ~ E points in the direction of decreasing V Potential from a single charge The electric potential energy of a point charge, q , at a distance, r , from a charge Q is: U elec = k gQ r So, the electric potential at a distance,
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/01/2010 for the course PHYS 101213 taught by Professor Bratton during the Spring '10 term at CSU Chico.

Page1 / 6

lecture 2 - Potential energy Electrical PotentialE E Energy...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online