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Electricity
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Total cards: 2•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (2)
#1
Front (Question)
How does an electron gun work?
Back (Answer)
• Electrons emitted from hot wire. • Large p.d between anode and filament. • Electrons accelerate to anode. • Electrons pass through gap in anode.
#2
Front (Question)
What is Ohm’s law?
Back (Answer)
For a metallic conductor kept at constant temperature, current across wire is directly prop to p.d across its ends.