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Resistors

A resistor entails the following two main characteristics :

(i) Its resistance (R) in ohms ……. The resistors are available from a fraction of an ohm to many mega ohms.

(ii) The wattage rating ……. The power rating may be as high as several hundred watts or as low as 1/10 watt. Power rating indicates the maximum wattage the resistor can dissipate without excessive heat (Too much heat can make the resistor burn open).