55.56_Ampere and Lorentz Forces (1)

Lesson Objectives By the end of the lesson learners will be able: 10

Lesson Objectives

By the end of the lesson learners will be able:

10.4.1.2 – to apply the left-hand rule and describe the effect of a magnetic field on moving charged particles and electrical conductor;

Keywords English Russian Kazakh

Keywords

English	Russian	Kazakh
Magnetic flux
Magnetic flux density
Permeability
Fleming’s left hand rule
Conventional current

In 1820 ‘’A compass needle moved when it was close to a wire connected to a battery

3
In 1820
‘’A compass needle moved when it was close to a wire connected to a battery.’’
Professor Hans Christian Oersted

4 B

4
B

5 B

5
B

6 RIGHT HAND GRIP RULE:

6
RIGHT HAND GRIP RULE:

7 current outwards current inwards B

7
current outwards
current inwards
B

I N turns In the middle At the end

N turns

In the middle
At the end

N S Interaction between a magnet and the field due to a current

9
N
S
Interaction between a magnet and the field due to a current

10

11 FLEMING’S LEFT HAND MOTOR RULE

11
FLEMING’S LEFT HAND MOTOR RULE

FLEMING’S LEFT HAND MOTOR RULE

12
FLEMING’S LEFT HAND MOTOR RULE
FOREFINGER = FIELD
THUMB = MOTION
SECOND FINGER = CURRENT

Activity 13

Activity
13

Answers 14

Answers
14

F=B I LSinθ Where L = length of conductor in the field Θ is the angle between

15
F=B I LSinθ

Where L = length of conductor in the field
Θ is the angle between B and I

16

Like Currents Attracts Unlike Currents

Like Currents AttractsUnlike Currents Repel

Force experienced by a charged particle (charge

18
Force experienced by a charged particle (charge Q) moving with a velocity, v ,in a magnetic field of Flux density, B.
+
Q
Particle travels L metres from A to B in t seconds
F = B I L

F = BQv