Single Answer MCQ
Q-00040467
How much heat is generated when a current of 5 A flows through a resistance of 10 Ω for 2 minutes?
1
600 J
2
1200 J
3
300 J
4
400 J
Answer and Solution
Answer
B. 1200 J
Solution:
Using H = I²Rt, where I = 5 A, R = 10 Ω, and t = 120 s, we get H = 5² x 10 x 120 = 3000 J.
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