Question

a resistance of 25 ohm is connected to a 12 V battery . calculate the heat energy in joules generated per m

Answer 1

Current = V / R

= 12 / 25 = 0.48 ampere.

Heat energy = I2Rt

= (0.48)2 x 25 x 60

= 345.6 Joules.

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Answer 2

Answer:

The heat energy generated per minute is 345.6 Joules.

Step-by-step explanation:

Given : A resistance of 25 ohm is connected to a 12 V battery.

To find : Calculate the heat energy in joules generated per minute?

Solution :

We have given,

Resistance R= 25 ohm

Voltage V= 12 V

Time T= 1 minute = 60 sec

We know, $I=\frac{V}{R}$

Where, I is the current

$I=\frac{12}{25}$

$I=0.48A$

The formula of heat energy is given by,

$H=I^2\times R\times T$

Substitute the value in the formula,

$H=(0.48)^2\times 25\times 60$

$H=0.2304\times 25\times 60$

$H=345.6J$

Therefore, The heat energy generated per minute is 345.6 Joules.