Question

When a current of 5 A flows through a uniform conductor of resistance 10$\Omega$ for 5 s, find the heat produced in the conductor.

• A. 2500 J
• B. 250 J
• C. 1250 J
• D. 625 J

Answer 1

The correct option is C 1250 J

From Joule's law of heating we know that the heat produced in a current carrying resistor in time t is given by

$Q=i^{2}Rt$

$=5^2\times 10\times 5$

$=1250J$

Answer-(C)