A constant voltage is applied between the two ends of a uniform metallic wire. Some heat…
Physics · JEE Advanced · NTA Exams — Current Electricity
A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if
- both the length and the radius of the wire are halved.
- both the length and the radius of the wire are doubled.
- the radius of the wire is doubled.
- the length of the wire is doubled.
Answer
(C) the radius of the wire is doubled.
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