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Physics CBSE Live product
Class 8 (2026-27)
Electricity: Magnetic and Heating Effect
Electric Cells and Batteries
2.
Electrolytes and simple electric cells
Question:
2
m.
Choose the correct answer:
1
.
An LED is connected to two identical copper plates dipped in lemon juice. What will be observed?
LED will glow only when plates touch
LED will glow brightly
LED will not glow
LED will glow dimly
2
.
In which situation will the LED glow the brightest?
Oil and same metals
Weak electrolyte and same metals
Strong electrolyte and different metals
Pure water and different metals
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