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Q3. When brightness reaches 0 or 255, the variable _____ changes sign to reverse fading.Answer: fadeAmountQ4. The brightness values given to analogWrite() range from _____ to _____.Answer: 0 to 255 Match the FollowingColumn A (Code Element) Column B (Function)1. analogWrite() a. Controls speed of fading effect2. fadeAmount b. Sends PWM value to LED3. brightness c. Stores LED brightness level4. delay(30) d. Defines how much brightness changes each loopAnswer Key:1 %u2192 b2 %u2192 d3 %u2192 c4 %u2192 a
