Energy And Voltage In Circuits
Gbogbo ọrọ náà
Every circuit question on the Edexcel papers comes down to understanding how current, voltage and resistance relate to each other. Whether components are wired in series or parallel changes the rules, and knowing those rules lets you solve any circuit problem.
In this lesson you will learn about series and parallel circuits, V = IR, Q = It, I-V characteristics of components, LDRs, thermistors, current conservation, voltage sharing, and E = QV.
Ebumnobi
- Explain why a series or parallel circuit is more appropriate for particular applications
- Understand how the current in a series circuit depends on the applied voltage and the number and nature of other components
- Describe how current varies with voltage in wires, resistors, metal filament lamps and diodes
- Describe the qualitative effect of changing resistance on the current in a circuit
- Describe the qualitative variation of resistance of LDRs with illumination and of thermistors with temperature
- Know that lamps and LEDs can be used to indicate the presence of a current in a circuit
- Know and use the relationship: voltage = current x resistance
- Know that current is the rate of flow of charge
- Know and use the relationship: charge = current x time
- Know that electric current in solid metallic conductors is a flow of negatively charged electrons
- Understand why current is conserved at a junction in a circuit
- Know that the voltage across two components connected in parallel is the same
- Calculate the currents, voltages and resistances of two resistive components connected in a series circuit
- Know that voltage is the energy transferred per unit charge passed and the volt is a joule per coulomb
- Know and use the relationship: energy transferred = charge x voltage
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Energy And Voltage In Circuits. 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.
- In a series circuit, current is: A) Different through each component B) The same through all components C) Zero D) Shared equally between components Answer: B
- V = IR. If V = 12 V and R = 4 ohms, I is: A) 48 A B) 3 A C) 16 A D) 0.33 A Answer: B
- In parallel, the voltage across each branch is: A) Shared equally B) Zero C) The same as the supply D) Doubled Answer: C
- An LDR in darkness has: A) Low resistance B) High resistance C) Zero resistance D) Infinite conductance Answer: B
- 1 volt equals: A) 1 joule per ampere B) 1 joule per coulomb C) 1 coulomb per second D) 1 watt per ampere Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
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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Akụkụ akwụkwọ
Series Circuits
Interpret circuit diagrams and diagram basic circuit elements
"Physics: Series Circuits" 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/19-2-series-circuits. Access for free at https://openstax.org/books/physics/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Energy And Voltage In Circuits? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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