Current Electricity and Electrical InstrumentEasy
Question
It takes t minutes for a kettle of water to start boiling when placed on an electric heater. If the voltage drops to half its value, the time taken for this water to boil will be:
Options
A.
t minutes
t minutesB.2 t minutes
C.4 t minutes
D.8 t minutes
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
If E = 200Volt, R = 25Ω, L = 2H and C = 2μF and the frequency is variable then the current at f = 0 and f = &#...All the edges of a block in cuboidal shape with parallel faces are unequal. Its longest edge is twice its shortest edge....In a balanced wheat stone bridge, current in the galvanometer is zero. It remains zero when...An electrolyte bulb marked 40 W and 200 V, is used in a circuit of supply voltage 100V. Now its power is...Choose the correct alternatives...