Physics: Electricity: Units
Akopọ
Electricity calculations involve several quantities that look similar at first glance - current, charge, voltage, resistance, energy and power. Each has its own SI unit, and mixing them up is one of the fastest ways to lose marks in an exam.
This lesson lists the seven units the Edexcel specification requires for the Electricity section: ampere, coulomb, joule, ohm, second, volt and watt. You will learn what each one measures, how they connect through equations, and how to handle the metric prefixes that appear in real circuit problems.
Awọn Afojusun
- Use the following units: ampere (A), coulomb (C), joule (J), ohm (Ohm), second (s), volt (V) and watt (W)
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Oriire fun ipari ẹkọ lori Physics: Electricity: Units. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- The SI unit of electric charge is: A) Ampere B) Volt C) Coulomb D) Watt Answer: C
- Resistance is measured in: A) volts B) amperes C) ohms D) watts Answer: C
- One volt is equivalent to: A) one joule per second B) one joule per coulomb C) one coulomb per second D) one watt per ampere Answer: B
- How many milliamps are in 1.5 A? A) 0.015 mA B) 15 mA C) 150 mA D) 1500 mA Answer: D
- Which quantity is measured in watts? A) Energy B) Charge C) Power D) Resistance Answer: C
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
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Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Ohm's law
Describe how current is related to charge and time, and distinguish between direct current and alternating current
"Physics: Ohm's law" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/19-1-ohms-law. Access for free at https://openstax.org/books/physics/pages/1-introduction
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Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
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