Magnetic Effects of Electric Current
Top questions
See all →- What is the function of an earth wire? Why is it necessary to earth metallic appliances? The metallic body of electric appliances is connected to the earth by means of earth wire so that any leakage of electric current is transfe... 1
- When does an electric short circuit occur? If the insulation of the wires used in the circuit is damaged or the appliance used is faulty due to which the live wire and the neutral wir... 1
- Explain the underlying principle and working of an electric generator by drawing a labelled diagram. Principle: An electric generator works on the principle of electromagnetic induction phenomenon. According to it, whenever a coil is rotated... 1
- State the rule to determine the direction of a (i) magnetic field produced around a straight conductor-carrying current, (i) Maxwell's right hand thumb rule (ii) Fleming's left hand rule (iii) Fleming's right hand rule 1
- Two circular coils A and B are placed closed to each other. If the current in the coil A is changed, will some current Two circular coils A and B are placed close to each other. When the current in coil A is changed, the magnetic field associated with it also... 1
- A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is (i) The needle of the galvanometer shows a momentary deflection in a particular direction. (ii) The needle of the galvanometer shows a momen... 1