Physics
Grade-7
Easy
Question
In the described experimental setup, a bulb connected to the electric circuit does not glow because
- The bulb may be fused
- The liquid used in the above experiment may be a strong electrolyte
- The liquid used in the above experiment may not be conducting electricity
- Both [b] and [c]
Hint:
The bulb doesn't glow if the liquid connected to it is a weak electrolyte or a non-conducting solution.
The correct answer is: Both [b] and [c]
- A strong electrolyte conduct an electric current as it has free ions.
- A solution must be electrolyte to conduct current.
- If the bulb is connected with a weak electrolyte or a non-conducting solution, it doesn't glow.
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