Green Bridge Learning Resource Nchekwa Maka Physics: Magnetism And Electromagnetism: Units

Gbogbo ọrọ náà

The magnetism and electromagnetism section draws on just three units, but each appears in key equations linking current, voltage and power in electromagnetic devices.

This reference covers the three SI units for this section: ampere, volt and watt, along with the contexts in which they appear in magnetism and electromagnetism questions.

Akọmọ Ojú-ẹkọ

Magnetism questions are more qualitative than most physics topics in the Double Award specification - field patterns, poles, attraction and repulsion are described in words and diagrams rather than calculated. But once a question moves from a permanent magnet to an electromagnet, a motor or a generator, numbers start appearing: the current in a coil, the voltage a device runs on, the power it delivers. These three units are the complete list the specification requires for this section, and every calculation question in magnetism and electromagnetism draws only on these.

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 unit of current is: A) Volt B) Watt C) Ampere D) Ohm Answer: C
A device draws 0.5 A from a 230 V supply. Its power is: A) 460 W B) 115 W C) 230.5 W D) 0.002 W Answer: B
Induced voltage in a generator is measured in: A) Amperes B) Volts C) Watts D) Ohms Answer: B
What is 200 mA in amperes? A) 20 A B) 2 A C) 0.2 A D) 0.02 A Answer: C
Power is calculated using: A) P = V/I B) P = IR C) P = IV D) P = I/V Answer: C

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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.

Akwụkwọ ndụmọdụ zuru oke nwere eserese

Onye inyeaka mmụta AI

Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla

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Ọ dị na Android, Windows, macOS, na Linux

Physics: Magnetism And Electromagnetism: Units

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