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Worksheets3.1 The Magnetic Effect of a Current Carrying Conductor
Total questions: 16
Worksheet time: 8mins
Soft iron core
Easily magnetised and demagnetised
Difficult to be magnetised and demagnetised
Steel core
Easily magnetised and demagnetised
Hard to be magnetised and demagnetised
Soft iron core suitable to become temporary magnet ( electromagnetism)
True
False
Steel core suitable to be permanent magnet
True
False
Magnetic field is a region where magnetic materials experience force
True
False
Electromagnet is a temporary magnet produce when a wire coils around soft iron core
True
False
To increase magnetic field around the electromagnet ...
Increase the current
Decrease number of coils
Coil around soft iron core
U- shaped magnet bar
U-shaped iron core is more suitable than straight iron core because
Straight iron core easily magnetised and demagnetised
U-shaped has stronger magnetic field
Diagram shows a current flows into a coil.
Which of the following magnetic field around the wire is correct ?
Diagram shows 2 compass L and M to determine the direction of magnetic field around the straight conductor.
Which direction is correct direction for compass L and M?
L : P
M : R
L : S
M : P
L : Q
M : R
L : P
M : S
Diagram shows magnetic field between two North poles.
Which region has a greatest strenght of magnetic field?
A
B
C
D
Which is correct pole fir X and Y region?
X : North
Y : South
X : South
Y : North
What is your inference from the diagram
Strength of magnetic field depend on current
Strength of magnetic field depend on number of coils
Strengh of magnetic field depend on type of core
Application of electromagnet can be used in
Relay switch
Electric bell
Telephone earpiece
Circuit breaker
Who was the first to observe the magnetic effect of electric current?
Faraday
Oersted
Volta
Ampere
The magnetic field lines due to a straight wire carrying a current are
straight
circular
parabolic
elliptical
