Which scientist is associated with the discovery of electron? MCQ with Answer and Explanation

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Which scientist is associated with the discovery of electron?

A. Ernest Rutherford

B. J.J. Thomson

C. Niels Bohr

D. James Chadwick

Answer: Option B

Solution (By JKSSB Mock Tests)

J.J. Thomson discovered the electron.

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Question #1

The Wright Brothers invented:

A. Submarine

B. Helicopter

C. Aeroplane

D. Rocket

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Correct Answer: Option C

Explanation:
They achieved the first powered flight.

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Question #2

Which instrument is used to measure electric current?

A. Galvanometer

B. Ammeter

C. Potentiometer

D. Voltmeter

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Correct Answer: Option B

Explanation:
An ammeter is a measuring instrument used to measure the current in a circuit.

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Question #3

Which element is commonly used in light bulb filaments?

A. Copper

B. Silver

C. Tungsten

D. Gold

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Correct Answer: Option C

Explanation:
Tungsten has a very high melting point, making it perfect for light bulb filaments.

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