Physics GCSE
Direct voltage
What Direct voltage means in Physics GCSE, as defined for OCR.
Definition of Direct voltage
Check what you remember
Read the wording for your board, then hide it and explain Direct voltage in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Keeps the same polarity, so the potential difference stays on one side of zero and current flows one way around the circuit.
Topics that use Direct voltage
- Powering Earth (OCR GCSE)
Related terms
- Alternating current in the home
- Alternating voltage
- Changing potential difference in power transfer
- Danger of the live wire with an open switch
- earth wire
- fossil fuels
- Frequency of the UK mains supply
- High-voltage transmission advantages
Using Direct voltage in the exam
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