An electric current of 2 amperes flows in a heating coil of resistance 50 ohms for 3 minutes 20 seconds. Determine the heat produced
a
0.5kJ
b
8.0kJ
c
20.0kJ
d
40.0kJ
Explanation
Correct Option
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Discussions (9)

Atere Jr
10 years ago
u should already know that they meant 3 minutes and not 30. That was how they artived at the answer 40kj.

emeraldknytt
10 years ago
The question is wrongly composed:
Shouldn't 30mins be equal to (30X60)secs which in turn is equivalent to 1800secs plus the 20secs which eventually gives 1820secs. I have a feeling the answer isn't in the options given.



