Practise describing nuclear fusion as a potential future energy source and identifying its hydrogen fuel with CAIE IGCSE Physics questions and mark schemes.
Research is being carried out to produce electrical energy from the fusion of hydrogen nuclei.
Which row shows two of the problems in designing a fusion reactor?
temperature
needed
why obtaining a high density
of hydrogen nuclei is difficult
very low
the nuclei are negatively charged
and repel each other
very low
the nuclei are positively charged
and repel each other
very high
the nuclei are negatively charged
and repel each other
very high
the nuclei are positively charged
and repel each other
D