Exams › NEET › Physics

The heat developed in a system is proportional to the current through it. Then

1. it cannot be Thomson heat.
2. it cannot be Peltier heat
3. it cannot be Joule heat.
4. it can be any of the three heats mentioned above

Correct answer: it cannot be Joule heat.

Solution

Joule heating is given by I²R, so it varies as the square of current, not directly proportional to current. Thomson and Peltier heats are proportional to current, so the statement rules out Joule heat.

Related NEET Physics questions

• Which of the following statement regarding transformer is incorrect?
• Electric current flows through:
• A particle of mass \( m \) is made to move with uniform speed \( v \) along the perimeter of a regular hexagon. The magnitude of impulse applied at each corner is:
• According to Stoke's law, the viscous drag force, on an oil drop is proportional to:
• was the first to discover that lightning is electric discharge.
• Assertion Newton's law of gravitation resembles Coulomb's law of electrical forces. Reason Coulomb's law has the product of two charges in place of the product of the masses, and the electrostatic constant in place of the gravitational constant.

⚔️ Practice NEET Physics free + battle 1v1 →