Physics: Electromagnetism

1. 1Forces are strongest at the poles of a magnet

   1. AVerdadeiro
   2. BFalso
2. 2Like poles...

   1. ARepel
   2. BAttract
3. 3Unlike poles...

   1. AAttract
   2. BRepel
4. 4Repulsion and attraction are both [blank_start]non-contact[blank_end] forces

   1. Anon-contact
   2. Bcontact
5. 5Permanent magnets produced their [blank_start]own[blank_end] magnetic field whilst [blank_start]induced[blank_end] magnets become a magnet when placed in a [blank_start]magnetic field [blank_end]

   1. Amagnetic field
   2. Bown
   3. Cinduced
6. 6Induced magnetism always causes a force of repulsion

   1. AVerdadeiro
   2. BFalso
7. 7Which of the following are magnetic material?

   1. AIron
   2. BSteel ( alloy of iron)
   3. CCobalt
   4. DNickel
   5. ELithium
   6. FMagnesium
   7. GSilver
   8. HGold
8. 8The direction of a magnetic field can be found using a [blank_start]compass[blank_end]

   1. Acompass
9. 9Earth has its own magnetic field due to its [blank_start]core[blank_end]

   1. Acore
10. 10When a current flows through a [blank_start]conducting[blank_end] wire, a [blank_start]magnetic field[blank_end] is produced around the wire

    1. Aconducting
    2. Binsulating
    3. Cmagnetic field
    4. Dattraction
    5. Erepulsion

11. 11Larger current= smaller magnetic field

    1. AVerdadeiro
    2. BFalso
12. 12Magnetic field is [blank_start]strongest[blank_end] [blank_start]closer to[blank_end] the wire

    1. Astrongest
    2. Bweakest
    3. Ccloser to
    4. Dfurther from
13. 13If you change the direction of the current, you change the direction of the magnetic field

    1. AVerdadeiro
    2. BFalso
14. 14To work out the direction of the magnetic field you can...

    1. AThe right hand rule
    2. BFleming’s left hand rule
15. 15To increase the strength of the magnetic field you can [blank_start]coil[blank_end] the wire

    1. Acoil
16. 16Label the diagram

    

    1. ASolenoid
17. 17When you turn on the current, there is a [blank_start]strong[blank_end] and uniform magnetic field [blank_start]inside[blank_end] the solenoid. The magnetic field around the solenoid has a [blank_start]similar[blank_end] shape to the bar’s magnetic field.

    1. Astrong
    2. Bweak
    3. Cinside
    4. Doutside
    5. Esimilar
    6. Fdifferent
18. 18In what ways can you increase the magnetic field of a solenoid?

    1. AIncrease the current
    2. BDecrease the current
    3. CIncrease the number of coils of the solenoid
    4. DDecrease the number of coils of the solenoid
    5. EPlace iron inside the solenoid to create an iron core
19. 19A solenoid with an iron core is called an electromagnet

    1. AVerdadeiro
    2. BFalso
20. 20Electromagnets are useful because you can [blank_start]change[blank_end] the [blank_start]strength[blank_end] of the magnetic field by changing the size of the [blank_start]current[blank_end] and you can turn it off and on

    1. Achange
    2. Bstrength
    3. Ccurrent
21. 21A magnetic field of a wire [blank_start]interacts[blank_end] with the magnetic field of [blank_start]magnets[blank_end] therefore the wire will now experience a [blank_start]force[blank_end]

    1. Ainteracts
    2. Bmagnets
    3. Cforce
22. 22The force equation ( F= B * I * L) apples to a wire which is at right angles to the magnetic field

    1. AVerdadeiro
    2. BFalso
23. 23If the conductor is parallel to the magnetic field it will still experience a force

    1. AVerdadeiro
    2. BFalso
24. 24Fleming’s left hand rule= Thumb-> [blank_start]motion[blank_end] First finger-> [blank_start]Field[blank_end] (N->S) Second finger-> [blank_start]current [blank_end]

    1. Amotion
    2. BField
    3. Ccurrent
25. 25Label what the current look likes

    

    1. ACurrent opposite on both ends
26. 26A split [blank_start]ring[blank_end] commutator is used to keep the motor rotating in the [blank_start]same[blank_end] direction

    1. Adifferent
    2. Bring
    3. Csame
27. 27A split metal ring connected to [blank_start]conducting[blank_end] brushes, the brushes allow the electric current to pass on to the ring. The current produces a [blank_start]turning[blank_end] force on the motor which makes the motor [blank_start]rotate[blank_end] in the [blank_start]clockwise[blank_end] direction. Current is [blank_start]broken[blank_end] for a tiny fraction but the wire keeps turning due to [blank_start]momentum[blank_end].

    1. Aconducting
    2. Bturning
    3. Crotate
    4. Dclockwise
    5. Ebroken
    6. Fmomentum

Descrição

GCSE Physics Quiz sobre Physics: Electromagnetism , criado por Robyn Stevenson em 10-04-2018.

Autor

Robyn Stevenson

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English

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