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3.7 Fields and their consequences
Quick questions on Alternating currents and transformers: rms values and the grid - AQA A-Level Physics
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
A sinusoidal supply has a peak voltage of . Calculate the rms voltage. [2 marks]
What is q2?Show answer
Explain why electrical power is transmitted at high voltage. [2 marks]
What is q3?Show answer
State one cause of energy loss in a real transformer core and how it is reduced. [2 marks]
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