Malaysia SPM Form 5 Physics - Electromagnetism

1.1 Introduction to Magnetism
1.2Straight Wire and Coil
1.3 Solenoid
1.4 Uses of Electromagnet
2.1 Catapult Force
2.2 Application of Catapult Force
3.1 Electromagnetic Induction
3.2 DC and AC Generator
4.1 Transformer
4.2 Transformer - Calculation
5.1 Generation and Transmission of electricity

Electromagnet - Straight Wire and Coil

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1. Which of the pictures above shows the magnetic field that produced by a single straight current-carrying wire?
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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2. Which symbol in the figure shows that current is flowing into the screen?
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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3. The direction of the magnetic field produced by a current-carrying conductor can be determined by.

I. Fleming's Left Hand Rule
II. Fleming's Right Hand Rule
III. Right Hand Grib Rule
IV. Maxwell's Screw Rule

Choice 1 III only
Choice 2 I only
Choice 3 I and III only
Choice 4 III and IV only

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4. Which of the following diagrams shows the correct magnetic field pattern produced by the current in a straight wire?
Choice 1 P and R only
Choice 2 R and S only
Choice 3Q, R and S only
Choice 4 Q and S only

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5. Which of the picture in the diagram shows a correct method in finding the direction of the magnetic field produced by a straight wire?
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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6. Which of the following statements are TRUE about the magnetic field generated by a straight current carrying conductor?

 

I. The magnetic field strength increase when the current increases.
II. The magnetic field strength increase when the distance from the conductor increases.
III. The direction of the field line depends on the direction of the current.
IV. The direction of the field can be determined by Maxwell's Screw Rule.

Choice 1 I, II and III only
Choice 2 I and III only
Choice 3 I, III and IV only
Choice 4 I, II, III and IV

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7. The figure shows a compass placed above a conductor. When the switch is on, the pointer of the compass will point to the direction as in
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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8. The figure shows a compass placed above a conductor. When the switch is on, the pointer of the compass will point to the direction as in
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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9. Which of the following diagrams shows the correct magnetic field pattern produced by a current carrying coil?
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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10. Which of the following diagrams shows the correct magnetic field pattern produced by current in 2 straight wires?
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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11. Which of the following diagrams shows the correct magnetic field pattern produced by current in 2 straight wires?
Choice 1 P
Choice 2 Q
Choice 3 R
Choice 4 S

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electromagnetism notes