Related Clues:

• Favouring an imperial unit, one is charged
• Essentially, it's free of charge!
• 8's relation said: 'Young Weasley's a tiny part -- no charge'
• Particle of metal first bit of rubbing removed
• Particle (phys.)
• Expert encounters weight in particle
• Particle -- turn one out
• Particle of dust finally spotted in cell
• Physics focus
• Plasma particle
• Rugby players robbing banks — one's charged
• Electron-deficient particle, e.g
• —
• "Am __ the right track?"
• It's extremely small and free of charge