This preview shows pages 1–4. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 1 1 Part I: Solve the following 10 problems 1. An electron escapes from the surface of a conducting sphere with radius 5 cm and charge 5 µC. What is the highest acceleration which the electron experiences? (2 points) 2 R kQe F = 2 18 10 2 . 3 − × = = ms m F a 2. What is the electric flux through the top face of the cube shown? The side of cube is a = 15 cm and the electric field, in N/C, is k j i E ˆ 200 ˆ 700 ˆ 500 − + − = r . (2 points) ( ) ∫ ∫ ⋅ − + − = = dA k k j i A d E ˆ ˆ 200 ˆ 700 ˆ 500 . r r φ = C m N a / 5 . 4 200 2 2 ⋅ − = − = y x z a top face 2 2 3. In the figure below, the ring with radius R = 6 cm is in the xy plane and is centered at the origin. The ring carries a uniformly distributed charge of +2 nC. An electron is released from rest along the zaxis at z = 8 cm. What is the kinetic energy of the electron, in eV, as it passes through the origin? (3 points) → Δ − = Δ U K as K in =0 ( ) J z R kQ R kQ e K 17 2 1 2 2 10 92 . 1 − × = + − = eV K 120 = 4. The electric potential V in a region of space is given by V = x 2 – 3 y 2 + z 2 where V is in volts and x, y and z are in meters. What is the magnitude of the electric field at a point with coordinates x = y = z = 1 m? ( 3 points ) i i x V E ∂ ∂ − = so ( ) k z j y i x E ˆ 2 ˆ 6 ˆ 2 + − − = r ( ) k j i E ˆ 2 ˆ 6 ˆ 2 1 , 1 , 1 − + − = r C N C N E / 6 . 6 / 2 6 2 2 2 2 = + + = y x z R 3 3 5. The capacitors C 1 = 3.00 µF, C 2 = 6.00 µF and C 3 = 4.00 µF are fully charged; the capacitor C 2 has a plate charge of 18.0 µC. What is the voltage across the capacitor has a plate charge of 18....
View
Full
Document
This note was uploaded on 11/03/2009 for the course PHY 101 taught by Professor Exams during the Spring '07 term at Kuwait University.
 Spring '07
 exams
 Physics, Charge, Acceleration

Click to edit the document details