Question

calculate the heat of the bulb in power 50W and 220 V in 10 minutes

Answer 1

Answer:

H = I^2RT

H = (.227)^2*968*10*60

H = .051529*968*600

H = 29928.0432 Joules

Explanation:

P = IV

P= v^2/R

Answer 2

Answer

• Heat of the bulb is 3 × 10⁴ J

Given

• Power of the bulb is 50 W
• Potential Difference is 220 V
• Time is 10 min

To Find

• Heat of the bulb

Solution

Power , P = 50 W

Potential Difference , V = 220 V

Time , t = 10 min = 600 s

Heat , H = ? J

Now , " Power is defined as Energy per unit time "

$\tt Power=\dfrac{Energy}{Time}\\\\\implies \tt Energy=Power \times Time\\\\\implies \tt H=P \times t\\\\\implies \tt H=50 \times 600\\\\\implies \tt H=30000\ W-s\\\\\implies \tt H=3 \times 10^4\ J$