This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
Step 1: Identify the given values. The power of the bulb (P) is 40 \, W. The time (t) the bulb is used is 900 \, s. The voltage (V = 120 \, V) is given but not needed for this calculation since power is already provided. Step 2: Use the formula for heat generated. The heat generated (Q) by an electrical appliance is the product of its power and the time it is used. Q = P × t Step 3: Substitute the values and calculate the heat generated. Q = 40 \, W × 900 \, s Q = 36000 \, J Step 4: Express the answer in scientific notation and compare with the options. Q = 3.6 × 10^4 \, J Comparing this result with the given options: (A) 1.8 × 10^5 \, J (B) 3.6 × 10^4 \, J (C) 4.8 × 10^4 \, J (D) 6.2 × 10^4 \, J The calculated heat generated matches option (B). The final answer is B) 3.6 × 10^4 \, J. Last free one today — make it count tomorrow, or type /upgrade for unlimited.