Question

The heat developed in a current carrying conductor is directly proportional to the square of:

• A. resistance
• B. power
• C. current
• D. time

Answer 1

Answer:

C. current

• The correct answer is indeed Current, as the heat developed is directly proportional to the square of the current.The heat developed in a current-carrying conductor is directly proportional to the square of the current flowing through it, as described by Joule's Law:

H ∝ I²

Where:

• H is the heat developed

• I is the current flowing through the conductor

  This means that if the current is doubled, the heat developed will increase by a factor of four.

• Joule's Law also states that the heat developed is directly proportional to the resistance of the conductor and the time for which the current flows:

H ∝ I² × R × t