Year 11 Exam > Year 11 Videos > Physics for GCSE/IGCSE > Current Electricity
Current Electricity Video Lecture | Physics for GCSE/IGCSE - Year 11
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127 videos|148 docs|35 tests
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FAQs on Current Electricity Video Lecture - Physics for GCSE/IGCSE - Year 11
| 1. What is the difference between AC and DC current? |  |
Ans. Alternating Current (AC) flows in one direction and then reverses, while Direct Current (DC) flows consistently in one direction only.
| 2. How is current measured in a circuit? | |
Ans. Current is measured in a circuit using an ammeter, which is placed in series with the component or load being measured.
| 3. What is Ohm's Law and how is it used in current electricity? | |
Ans. Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance. It is used to calculate current, voltage, and resistance in a circuit.
| 4. How does a circuit breaker work to protect against overcurrent? | |
Ans. A circuit breaker works by automatically interrupting the flow of current in a circuit when it detects an overcurrent condition, thus preventing damage to the circuit and devices connected to it.
| 5. What are some common sources of electrical resistance in a circuit? | |
Ans. Some common sources of electrical resistance in a circuit include wires, connectors, switches, and the components themselves.
About this Video
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Nov 24, 2024 Last updated |
Video Description: Current Electricity for Year 11 2024 is part of Physics for GCSE/IGCSE preparation.
The notes and questions for Current Electricity have been prepared according to the Year 11 exam syllabus.
Information about Current Electricity covers all important topics for Year 11 2024 Exam.
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Introduction of Current Electricity in English is available as part of our Physics for GCSE/IGCSE for Year 11 & Current Electricity in
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Video Lecture & Questions for Current Electricity Video Lecture | Physics for GCSE/IGCSE - Year 11 - Year 11 full syllabus preparation | Free video for Year 11 exam to prepare for Physics for GCSE/IGCSE.
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