Question

A conductor of resistance 12 ohm is connected to supply of 240v. Calculate heat produce in 5 minute

Answer 1

$i = \frac{v}{r}$

$i = \frac{240}{12} = 20 \: ampere$

$h = {i}^{2} rt$

$h = 20 \times 20 \times 12 \times 5 \times 60$

$h = 20 \times 20 \times 60 \times 60$

$h = {20}^{2} \times {60}^{2}$

$h = 400 \times 3600$

$h = 1440000 \: joule$

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Answer 2

Answer:

1440000j

Explanation:

I=240/12=20

H=I^2RT

=20^2x12x300

=1440000j