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EnglandPhysicsQuick questions
4 Electrons, waves and photons
Quick questions on Energy, power and resistance: p.d., Ohm's law, resistivity and I-V graphs - OCR A-Level Physics A
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
Define potential difference. [1 mark]
What is q2?Show answer
A resistor carries at a p.d. of . Find its resistance and the power dissipated.
What is q3?Show answer
Describe how the resistance of an NTC thermistor changes as its temperature rises, and why. [2 marks]
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