When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes
negatively charged
positvely charged
neutral
bipolar
Explanation
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The right answer is A. Become negatively charged
In 1987 Sir J J Thomson discovered the electron while doing cathode ray experiments ( the rays which move from cathode to anode when an electric discharge is passed through a gas at low pressure), these are charges of negative electricity. When these cathode rays are deflected onto an electrode of an electrometer, the instrument measured a negative charge. The rays tested also were deflected by application of an electric field.
The selected answer is wrong:
Admin the answer is A.
In 1987 Sir J J Thomson discovered the electron while doing cathode ray experiments ( the rays which move from cathode to anode when an electric discharge is passed through a gas at low pressure), these are charges of negative electricity. When these cathode rays are deflected onto an electrode of an electrometer, the instrument measured a negative charge. The rays tested also were deflected by application of an electric field. All these results were found irrespective of the gas used. This particle was established basic constituent of all matter. http://blogs.siliconindia.com/Academics/Technology/Understanding-The-Micro-World-Of-AtomsMoleculesElementary-Particles--And-The-Macro-World-Of-Cosmos-bid-c51n23G016176841.html
REF: http://blogs.siliconindia.com/Academics/Technology/Understanding-The-Micro-World-Of-AtomsMoleculesElementary-Particles--And-The-Macro-World-Of-Cosmos-bid-c51n23G016176841.html
i no longer trust the answers i get here, i thought cathode are negatively charged ions or atoms. in other words, the deflection of cathode ray onto an electrode of an electrometer 'll automatically make the instrument negatively charged..
electrometer
- a device used to detect and measure static electricity; an electroscope
- a precision voltmeter that draws almost no current from the circuit.
Answer leans towards (a). If it is bipolar, I'd like to see some proof. ↭†
The answer is A. This is because cathode rays are streams of fast-moving, negatively charged electrons. When these particles hit the electrode of the electrometer, they transfer their negative charge to it.
The answer should be positive charged because when negative electrons passed through the electrometer it u then becomes positive
