Resistivity & Temperature || Colour Code OF Resistances

Ohm's Law||Resistivity||Conductivity||Temperature Variation OF Resistance||Resistance Vs Temperature Graphs

Potentiometer (To Find Internal Resistance )||Color Coding OF Resistance

Resistance || temperature dependence OF resistance

The positive temperature coefficient of resistance is for

Two wires are of same length and same area of cross-section. If first wire has resistivity rho_1 and temperature coefficient of resistance alpha_1 but second wire has resistivity rho_2 and temperature coefficient of resistance alpha_2 . Their series equivalent resistance is independent of small temperature changes. Then

Color coding of resistors, Temperature and resistance, Wheatstone Bridge and Meter Bridge

Temperature Coefficient Of Resistivityof Resistance

The temperature coefficient of resistance for a wire is 0.00125^(@)C^(-1) . At 300 K its resistance is 1Omega . The temperature at which the resistance becomes 2Omega is

The resistance of a wire at room temperature 30^(@)C is found to be 10 Omega . Now to increase the resistance by 10% , the temperature of the wire must be [ The temperature coefficient of resistance of the material of the wire is 0.002 per .^(@)C ]

The resistance of a colour-coded carbon resistance is 670 Omega . Find the colour of second band of the resistor.