CBSE Class 12 Physics 2023 Outside Delhi Set 1 Paper - Question ...

CBSE Class 12 Physics 2023 Outside Delhi Set 1 Paper

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Question : 3 of 35

Marks: +1, -0

A current of 0.8 A flows in a conductor of

40 Ω

for 1 minute. The heat produced in the conductor will be

$1445 {\J}$
$1536 {\J}$
$1569 {\J}$
$1640 {\J}$

Solution:

Given,

R=40 Ω

and

I=0.8 {\A}

t=1

minute

=60 {\ s}

Heat produced

=H=I^2 R t

\;\text " Or, "\;\;H=(0.8)^2 × 40 × 60

∴ \;H=1536 \;\text " Joule "\;

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