Current Electricity and Electrical InstrumentHard
Question
Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature, 100 W, 60 W and 40 W bulbs have filament resistances R100, R60 and R40, respectively, the relation between these resistances is
Options
A.
B.R100 = R40 + R60
C.R100 > R40 > R60
D.
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
The current i in the circuit of figure is -...A current of 2 A flows through 2Ω resistor when connected across a batery. The same battery supplies current of 0.5...All the edges of a block in cuboidal shape with parallel faces are unequal. Its longest edge is twice its shortest edge....A potentiometer circuit is set up as shown. the potential gradient, across the potentiometer wire, is k volt/cm and the ...Which of the following statement is wrong : -...