Physics: Electricity: Units
Gbogbo ọrọ náà
Every circuit calculation depends on using the correct electrical units. Confusing milliamps with amps, or forgetting the relationship between volts, joules and coulombs, leads to answers that are orders of magnitude wrong.
This reference covers the seven SI units for the electricity section of the Edexcel specification: ampere, coulomb, joule, ohm, second, volt and watt.
Ebumnobi
- Use the following units: ampere (A), coulomb (C), joule (J), ohm (Ohm), second (s), volt (V) and watt (W)
Akọmọ Ojú-ẹkọ
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Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Physics: Electricity: 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 charge is: A) Ampere B) Coulomb C) Volt D) Ohm Answer: B
- How many amperes is 750 mA? A) 7.5 A B) 0.75 A C) 75 A D) 0.075 A Answer: B
- One volt is equivalent to: A) One joule per second B) One coulomb per second C) One joule per coulomb D) One ampere per ohm Answer: C
- What is the unit of power? A) Joule B) Coulomb C) Newton D) Watt Answer: D
- 3.3 kilohms is equal to: A) 33 ohms B) 330 ohms C) 3300 ohms D) 33000 ohms Answer: C
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.
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