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 The specific resistance of a metallic conductor ______ with rise in temperature. Remains unchanged Increases None of the listed here Decreases Remains unchanged Increases None of the listed here Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct? 100 W lamp will glow brighter Both lamps will glow equally bright 40 W lamp will glow brighter 40 W lamp will fuse 100 W lamp will glow brighter Both lamps will glow equally bright 40 W lamp will glow brighter 40 W lamp will fuse ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A wire having very high value of conductance is said to be Insulator Very good conductor None of the listed here Moderately good conductor Insulator Very good conductor None of the listed here Moderately good conductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Voltage dependent resistors are used To suppress surges As heating elements For inductive circuits As current stabilizers To suppress surges As heating elements For inductive circuits As current stabilizers ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators. Thermistor Varistors Variable resistors Semiconductors Thermistor Varistors Variable resistors Semiconductors ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS