During another trial of the same experiment a different set of readings was obtained…
PHYSICS · Multi-part · CBSE · Physics · Current Electricity · Current Electricity
Problem
During another trial of the same experiment a different set of readings was obtained for an unknown metallic resistor:
Potential difference V (in volt): 0.5, 1.0, 1.5, 2.0, 2.5
Current I (in ampere): 0.05, 0.10, 0.15, 0.19, 0.25
Study the data and answer the following.
(a) Explain whether the resistor strictly follows Ohm’s law, giving two reasons based on the numerical values provided.
(b) Identify one possible experimental factor that could have caused the observed deviation, if any, and describe how it influences the readings.
(c) Suggest two practical steps that the student should take in future trials to minimise such deviations and keep the physical condition of the resistor unchanged.