Results for “magnets”

Physics · Classes 4–5 · Magnetic and non-magnetic materials Lift the steel pin through a sheet of paper, without the magnet touching the pin. Magnets hold your fridge door shut, stick notes…

…blades of the turbine and makes it spin. The spinning shaft turns magnets inside the generator, close to coils of copper wire. When a magnet moves near a coil, electricity starts to flow in…

…from Basic 2. One idea behind almost all power stations: spin a magnet inside a coil. Why solar cells are the big exception. Meet Meher from Uttar Pradesh and Lalrinpuii from Mizoram. The…

Physics · Classes 6–7 · Electric current and its magnetic effect Lift at least 10 pins — then switch the current off and watch what happens. Electric bells, doorbells, loudspeakers,…

Physics · Class 10 · Magnetic effects of current: the electric motor Make the coil rotate continuously in one direction. Fans, mixers, pumps, washing machines, electric scooters and hard…

…produced by this effect. Only solar cells work differently. A strong magnet is held completely still inside a coil. The galvanometer shows… Induction needs a changing magnetic field, not…

…a tokamak: a ring of plasma held away from the walls by powerful magnetic fields. Did You Know? India is one of seven partners building ITER in France, the world’s largest fusion…

…— Physics Experiments 1–5 · floating and sinking, light and shadows, magnets, circuits, forces and friction Experiments 6–8 · solutions, evaporation and the water cycle, separating mixtures…

…gravity is really... A pull by ropes The curving of space and time Magnetism 2. Gravity affects time by... Stopping it Slowing it in stronger gravity Speeding it everywhere 3. Light cannot…

…It keeps the rotation continuous. Induced emf is largest when the magnet moves… A faster change in flux induces more emf. An object at 2F in front of a convex lens gives an image that is……

…how much water is pushed aside. Which pair are BOTH attracted by a magnet? Only iron, steel, nickel and cobalt are magnetic. A seed sprouts in a dark cupboard. What does this prove?…

…2. Spin the Turbine, Light the Homes Inside a generator, a spinning magnet near a copper coil makes electricity. Choose the wind speed and see how many homes light up. Too strong a storm,…

…Tokamak A doughnut-shaped machine that confines fusion plasma with magnetic fields. Triple product Density × temperature × confinement time; the target for fusion ignition. Well-to-wheel…

…gas, geothermal, nuclear — something spins a turbine, which spins magnets inside coils to make alternating current. Advance 1 covered both in detail. Efficiency and Capacity Factor…

…batteries are attractive because sodium is (a) abundant (b) magnetic (c) radioactive Flow batteries allow power and energy to be (a) sized separately (b) the same always (c) ignored D.…