Question

calculate the heat generated if a charge of 80,000 C is transferred through a potential difference of 225 V in 2 hours?​

Answer 1

Answer:

Explanation:

H = V×I×T

V= 225

T= 2 HRS

Q= 80000 C

I =Q/T

 = 80000/2

heat energy= 225×80000/2×2

                   = 225×80000

                    =18000000 joules

                     = 18 MJ( mega joules)

Answer 2

When a charge of 80,000 C is transferred through a potential difference of 225 V in 2 hours $1.7\times10^7 J$ of heat is generated.

Given:

Charge (Q) = 80000

Time (t) = 2 hrs = 7200 s

Volt (V) = 225

To find:

Heat generated (H) = ?

Formula to be used:

• Current (I) = $\frac{Q}{t}$
• Heat generated (H) = $V\times I\times t$

Calculation:

• To find the amount of heat generated, value for 'I' must be calculated. Thus value of 'I' must be identified.
• Thus the calculation is as follows:

$I = \frac{Q}{t}$

$I = \frac{80000}{7200}$

$I = 11$

On substituting the value of 'I' in the following formula, it gives the amount of heat generated.

H = $V\times I\times t$

H = 225 × 11 × 7200

H = 1.7820000

H = $1.7\times10^7$ J

Conclusion:

The amount of heat generated when charge of 80,000 C is transferred through a potential difference of 225 V in 2 hours is calculated as $1.7\times10^7 J$.

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