Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर
JEE Main & Advanced
Physics
Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर
Question Bank
Heating Effect of Current
question_answer
A coil takes 15 min to boil a certain amount of water, another coil takes 20 min for the same process. Time taken to boil the same amount of water when both coil are connected in series [DCE 2005]
A) 5 min
B) 8.6 min
C) 35 min
D) 30 min
Correct Answer:
C
Solution :
Time \[{{t}_{S}}={{t}_{1}}+{{t}_{2}}=35\,\,\min .\]