WebIf you move or spin an electromagnet within a magnetic field, that causes (induces) voltage to flow through the coil. The faster you spin/move, the higher the induced voltage. If you spin it fast enough, that induced voltage becomes equal to the battery voltage (which means no current can flow at all). WebJul 2, 2014 · From this, it can be see that if resistance remains constant in the circuit, when voltage increases, current must also increase. Since the strength of the magnetic field …

What are magnetic fields? - OCR 21st Century - BBC Bitesize

WebAbstract. IT is well known that the resistance (R) of a wire of bismuth, as measured with a constant current, increases under the influence of a magnetic field, and that this increase depends on ... WebNov 5, 2024 · Torque increases proportionally according to number of turns (N). Thus, the general equation for torque on a loop of any shape, of N turns, each of A area, carrying I current and exposed to a magnetic … char start ch

The Influence of Magnetic Fields Upon Electrical Resistance

WebThe magnetic field intensity depends upon different factors according to the source of the magnetic field. If the source is the solenoid, then the strength of the magnetic field depends upon three factors 1) number of turns per unit length, 2) current 3) the magnetic material inside the core. WebDec 13, 2024 · Magnets and electricity. Basics. The spinning of the electrons around the nucleus of an atom creates a tiny magnetic field. The electrons in most objects spin in random directions, and their magnetic forces cancel each other out. Magnets are different because the molecules in magnets are arranged so that their electrons spin in the same … Webthe needle of a magnetic compass. The strength of the magnetic field is greater: closer to the wire; if the current is increased; Magnetic fields around a wire carrying an electric current char staying zicca