Physics: Magnetism And Electromagnetism: Units
Gbogbo ọrọ náà
An electromagnet, a loudspeaker and an electric motor are all described by just three units: the ampere, the volt and the watt. Between them they answer how much charge is flowing, how hard it is being pushed, and how fast energy is being delivered.
In this lesson you will meet each of the three, see how the volt and the watt are built out of simpler units, practise the prefix conversions that appear on every device label, and use units as a quick check that a calculation has been set up the right way round.
Ebumnobi
- Use the following units: ampere (A), volt (V) and watt (W)
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Physics: Magnetism And Electromagnetism: Units. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- The SI unit of electric current is the: A) Volt B) Watt C) Ampere D) Coulomb Answer: C
- One volt is the same as: A) One joule per second B) One joule per coulomb C) One coulomb per second D) One watt per second Answer: B
- A device works at 12 V and draws 3 A. Its power is: A) 4 W B) 9 W C) 15 W D) 36 W Answer: D
- 250 mA expressed in amperes is: A) 0.025 A B) 0.25 A C) 2.5 A D) 250 000 A Answer: B
- One watt is the same as: A) One joule per coulomb B) One joule per second C) One coulomb per second D) One volt per ampere Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Physics: Magnetism And Electromagnetism: Units? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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