Current Electricity Ques 104
104. A current of $2 A$, passing through a conductor produces $80 J$ of heat in 10 seconds. The resistance of the conductor in ohm is
(a) 0.5
(b) 2
(c) 4
(d) 20
[1989]
Topic 5: Wheatstone Bridge & Different Measuring Instruments
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Answer:
Correct Answer: 104.(b)
Solution:
$ \begin{aligned} & \text{ (b) } H=I^{2} R t \\ & \text{ or } R=\frac{H}{(I^{2} t)}=\frac{80}{(2^{2} \times 10)}=2 \Omega \end{aligned} $
BETA
