Deflection of Electrons Lab #2
This experiment analyzes how changes in magnetic and electric fields effect the
deflection of electrons in a cathode ray tube. This experiment also gives a greater visual
representation and subsequent understanding
Which of the following statements is correct?
a) A battery provides fixed current.
b) A battery provides a fixed potential difference.
c) A battery provides a fixed power output
Conduc*vity and Resis*vity
I = nqvd A
I = nqvd A
electrical current (note that it has the form of a flux!)
J = nqvd
electrical current density (does not depend on the
shape of the wire)
I = nqvd A
1) Aluminum has an atomic mass of 13, and in th
A particle with charge +1 nC is moved at constant speed from
point A to point B.
The work done to make this move is
(a) Positive (b) zero (c) negative (d) can't tell
The potential energy of the particle is
Knight Ch. 29
You are responsible for
! The figure
shows the four
key ideas of
! We know, from Chapters 10 and 11, that force and
potential energy are closely related.
! The fo
The Photoelectric Effect
! Around 1900, Phillip Lenard
built an apparatus which
produced an electric current
when ultraviolet light was
shining on the cathode.
! This phenomenon is called
the photoelectric effect.
! Impossible to understand
The Daily Mail, June 30, 2007
A bicycle accelerates forwards from a stop sign,
eventually reaching a steady speed of 25 km/h.
Draw a motion diagram for the bicycle.
Use this picture to define what we mean by a position vector.
In which of the following
situations is the rate of
water flow through
various circular hoops
bigger? Rate these from
largest to smallest
Magnetic flux can be
defined in terms of an area
Which of the following is NOT a symmetry of a
a) translation parallel to any axis through its center
b) rotation about any axis through its center
c) reflection in any plane containing its center
Imagine a rod with a square cross section carry
! The human eye is roughly spherical, about 2.4 cm in diameter.
! The transparent cornea and the lens are the eyes refractive
! The eye is filled with a
clear, jellylike fluid called
the aqueous humor and
the vitreous humor.
f = no. of oscillations per s [ f hertz (Hz)]
= frequency of oscillation
Is the velocity of the wave shown above
(a) v = f
(c) v =
(e) v =
(b) v 2 = 2 + 2af
(d) v = 2
For reflection of ligh