JEE Main 2022 · 25 Jun · Shift 1 · Physics Q57

← JEE Main 2022 · 25 Jun · Shift 1

PhysicsInteger+4 / -1Question 57 of 90

A resistor develops 300 J of thermal energy in 15 s, when a current of 2 A is passed through it. If the current increases to 3 A, the energy developed in 10 s is ______ J.

Your answer

Answer and worked solution

Official answer: 450

Resistance. $300=2^2R(15)$ gives $R=5\ \Omega$ .

New energy. $3^2\times5\times10=450$ J.

Answer: 450

Topics:Electrical power and heating

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JEE Main 2022 · 25 Jun · Shift 1, Physics question 57