6. The filament of a 240 V metal filament lamp is to be connected from a wire having a diameter of 0.02 mm and a resistivity at 20 C of 4.3 micro ohms - cm and temperature coefficient at 20•C is 0.005/ °C, what length of filament is necessary if the lamp is to dissipate 60 watts at a filament tempearture of 2420•C

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Type of Magnetic Material

Every material has a unique composition that defines its magnetic behavior. Some materials get attracted towards a magnet and are called magnetic materials. Based on the magnetic properties held by each material, they are classified into different types.