Ten > Scientific Learning
Karma connected a dry cell to a bulb using a few pieces of wire and lit the bulb. He was curious to know how the thickenss of the used wire affects the life span of a dry cell. In this test or experiment, find out the independent variable, dependent variable and controlled variable.
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Atith Adhikari
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2 years ago
Solution
In this experiment, Karma studies the effect of the thickness of wire (causative factor) on the life span of a dry cell (effect). Hence, we can list the variables of scientific research as follows:
- Independent variable: Thickness of the wire
- Dependent variable: Life span of dry cell
- Controlled variable: Power of bulb, Number of bulbs, Potential difference of the dry cell, Previous usage of the dry cell, and more.
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