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ELECTRIC FIELD & CHARGE FLOW. PHYSICS FORM 5. OBJECTIVE:. At the end of the lesson, students should be able to: Identify the electric field and charge flow. Identify the electric current. Identify the type of ammeters. Know how to sketch the electric field lines.

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Electric field charge flow

ELECTRIC FIELD

&

CHARGE FLOW

PHYSICS FORM 5


Objective
OBJECTIVE:

  • At the end of the lesson, students should be able to:

  • Identify the electric field and charge

  • flow.

  • Identify the electric current.

  • Identify the type of ammeters.

  • Know how to sketch the electric field

  • lines.

  • Identity the effect of electric field

  • acting on a charged body.


Electric field

Quizzes

Charge flow

M

E

N

U

Summary

Reference



L

IGHTNING


ELECTRIC FIELD

Q1: What causes like charges to repel and unlike

charges to attract?

Answer:

This is because a charged object exerts an electrostatic force (that is attractive force or repulsive force) on nearby objects.


ELECTRIC FIELD

  • The charge object sets up an electric field in the space around it.

  • When a charge is moving in an electric field, an electric current is said to flow.


Electric field lines

ELECTRIC FIELD LINES

The direction of electrostatic forces experienced by two opposite charges (electrodes) in electric field.

Electric field lines are directed from positive charge(electrode) to negative charge(electrode).





Van de graaff
Van de Graaff electrostatic forces.

  • Electric field is formed by using a Van de Graaff generator.

  • Charges are transmitted to body when person touch the generator.



Charge flow
CHARGE FLOW electrostatic forces.

  • Negative electric charges which are carried by electrons are “pushed” from the negative terminal (-) of the cell.

  • These electrons go through the circuit and back to the positive terminal (+) of the cell.

  • This flow of electric charges forms an electric current.


Electric current
ELECTRIC CURRENT electrostatic forces.

  • Is defined as the rate of charge flow, that is



TYPE OF AMMETERS taken

  • Electric current is measured by using an ammeter, a milliammeter or a microammeter.

1. Ammeter


2. Miliammeter taken

3. Microammeter


QUIZZES taken


QUESTION 1 taken

Electron flows from __________________ charges to __________________ charges.


Answer….. taken

Electron flows from

__________________ charges to

__________________ charges.

NEGATIVE

POSITIVE


QUESTION 2 taken

Match the unit for each ammeter…

ammeter

microampere

milliammeter

ampere

microammeter

milliampere


Answer….. taken

ammeter

microampere

milliammeter

ampere

microammeter

milliampere


QUESTION 3 taken

Sketch the electric field lines for each of the diagram…



QUESTION 4 taken

Electric field lines are directed from the __________________ electrode to the __________________ electrode.


Answer….. taken

Electric field lines are directed from the

__________________ electrode

to the __________________

electrode.

POSITIVE

NEGATIVE


ELECTRICITY taken

ELECTRIC FIELD

CHARGE FLOW

ELECTRIC FIELD LINES

EFFECT OF ELECTRIC FIELD

ELECTRIC CURRENT

TYPES OF AMMETER

I = Q/ t

AMMETER

MILLIAMMETER

VAN DE GRAAFF

`

MICROAMMETER



References
REFERENCES taken

  • Textbook Physics Form 5 KBSM, Aras

  • Mega(m) Sdn Bhd

  • Reference book Golden New Vision

  • Physics SPM, Eastview

  • http://www.wikepidea.com


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