Page 547 - SUBSEC October 2017_Neat

UNIT 2
MODULE 1: ELECTRICITY AND MAGNETISM (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

Magnetic Fields (cont’d)

Students should be able to:

5.3. use the expressions for the See Appendix II for
magnetic flux density: suggested practical activity.

(a) of a perpendicular B = 0 I/2r
distance r from a long
straight wire;

(b) the centre of a flat B = 0 NI/2r [N = number
circular coil; and, of turns]

(c) near the centre of an B = 0 nI [n = number of
infinitely long turns per unit length = N/L]
solenoid.

6. Magnetic Forces

Students should be able to:

6.1. use Fleming's Left-Hand Rule
to predict the direction of
the force on a current-
carrying conductor in a
magnetic field;

6.2. use the equation
F = BILsinθ to solve
problems;

6.3. explain how the force on a See Appendix II for
current-carrying conductor suggested practical activity.
can be used to measure the
flux density of a magnetic
field by means of a current
balance;

CXC A16/U2/17 47