Create a chapter-wise list of formulas and SI units.

Then she connected them in . They were bright. “The current divides, but voltage is the same. That’s how house wiring works!”

Alex and Ben then traveled to the Electromagnetic Mountains, where they met a scientist named Dr. Spectrum. Dr. Spectrum introduced them to the electromagnetic spectrum, including radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

“Sound needs a medium,” Grandfather said, putting the fork in a vacuum jar. The sound died.

Suddenly, the bulb got blazing hot and died. “Too much current,” Grandfather said. “Remember : V = I × R . For a fixed resistor, if voltage (V) goes up, current (I) goes up. But here, heat increases resistance, creating a non-ohmic failure.”