Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

Some heat is developed in a uniform metallic wire across the ends of which a constant voltage V is applied. The heat developed will be tripled if

Options:

the radius of the wire is tripled

the length of the wire is tripled

both the radius and the length of the wire are reduced to one-third

both the radius and the length of the wire are tripled

Correct Answer:

both the radius and the length of the wire are tripled

Explanation:

The correct answer is Option (4) → both the radius and the length of the wire are tripled