Icse Class 10 Physics Guide
“It’s a ,” Anya muttered, connecting the positive terminal to the bulb and back to the negative. The bulb glowed faintly.
“When , it becomes an electromagnet ,” Grandfather said. “The direction of the magnetic field? Use the Right-Hand Thumb Rule – curl your fingers in the direction of current, your thumb points north.” icse class 10 physics
She powered the coil. It became a magnet, repelling the permanent magnet, and the motor jerked to life. This was the : a current-carrying wire in a magnetic field experiences a force . “It’s a ,” Anya muttered, connecting the positive
But the radio signal to trigger the foghorn came through empty space. “That’s an ,” he said. “No medium needed.” ” Anya muttered
“Too faint,” Grandfather said. “Measure it.”
