GCSE; OCR 21st Century; How to affect electric current - OCR 21st Century Current-voltage graphs. Electrical current depends on resistance and potential difference. Different electrical components ...

When plants draw water from their roots to nourish their stems and leaves, they produce an electric potential that could be harnessed as a renewable energy source. However, like all living things ...

- OCR 21st Century Current-voltage graphs Electrical current depends on resistance and potential difference. Different electrical components have different characteristics.