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
Here are the solutions to your problems. 1. Step 1: Identify the given values for voltage and current. We are given the voltage V = 12 V and the current I = 2.5 A. Step 2: Use the formula for electrical power. The power P of a lamp is calculated using the formula P = V × I. Step 3: Substitute the values and calculate the power. P = 12 V × 2.5 A P = 30 W The power of the lamp is 30 W. 2. Step 1: Identify the given values for resistance and current. We are given the resistance R = 20 \ and the current I = 4 A. Step 2: Use the formula for power dissipated by a resistor. The power P dissipated by a heater (resistor) is calculated using the formula P = I^2 × R. Step 3: Substitute the values and calculate the power. P = (4 A)^2 × 20 \ P = 16 A^2 × 20 \ P = 320 W The power dissipated by the heater is 320 W. Send me the next one 📸