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NEET UG PHYSICS MCQ: CURRENT ELECTRICITY
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Medium
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Analyzing
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Given below are two statements:
Statement I : A uniform wire of resistance is cut into four equal parts. These parts are now connected in parallel. The equivalent resistance of the combination will be .
Statement II : Two resistances and are connected in parallel in a electric circuit. The value of thermal energy developed in and will be in the ratio .
In the light of the above statements, choose the most appropriate answer from the option given below.
Statement I : A uniform wire of resistance is cut into four equal parts. These parts are now connected in parallel. The equivalent resistance of the combination will be .
Statement II : Two resistances and are connected in parallel in a electric circuit. The value of thermal energy developed in and will be in the ratio .
In the light of the above statements, choose the most appropriate answer from the option given below.
View answer and explanation
Correct option: C
Statement I is correct but statement II is incorrect
Option C is correct. Statement I is correct as the equivalent resistance is 5 ohms. Statement II is incorrect because thermal energy is inversely proportional to resistance, so the ratio is 2:3.
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(E) The drift velocity increases with the increase in the temperature of conductor.
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