Current Electricity In which of the following substances the resistance decreases with increase in temperature? Carbon Silver Constantan Copper Carbon Silver Constantan Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a material always decreases if Number of free electrons available becomes more Temperature of material is increased None of these Temperature of material is decreased Number of free electrons available becomes more Temperature of material is increased None of these Temperature of material is decreased ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A wire having very high value of conductance is said to be Very good conductor None of the listed here Insulator Moderately good conductor Very good conductor None of the listed here Insulator Moderately good conductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Lead Mercury Copper Zinc Lead Mercury Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Varistors are Non-linear resistors Insulators Carbon resistors Resistor with zero temperature co-efficient Non-linear resistors Insulators Carbon resistors Resistor with zero temperature co-efficient ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In the case of direct current Magnitude of current changes with time Magnitude and direction of current changes with time Magnitude of current remains constant Magnitude and direction of current remains constant Magnitude of current changes with time Magnitude and direction of current changes with time Magnitude of current remains constant Magnitude and direction of current remains constant ANSWER DOWNLOAD EXAMIANS APP
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