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Subjects
Science CBSE
Class 7 New
The World of Metals and Non-metals
Textbook Based Questions
15.
Conduction of electricity in materials
Exercise condition:
2
m.
Pick
the correct answer:
Electrical circuit
Rithesh to the same circuit replaced the copper coin with his eraser and a metal key. Which of the following best explains the observation?
Eraser - bulb does not glow; metal key - bulb glows
Eraser - bulb glows; metal key - bulb glows
Eraser - bulb glows; metal key - bulb does not glow
Bulb glows for both
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