Question

Two identical capacitor A and B are charged to the same potential and then made to discharge through resistance $$R_A$$ and $$R_B$$ respectively, with $$R_A > R_B$$

A
a will require greater time than B to discharge completely
B
more heat will be produced in A than in B
C
more heat will be produced in B than in A
D
all the above options are incorrect

Solution

The correct option is C all the above options are incorrectDischarging equation :  $$Q_A=Q_0e^{-t/CR_A}, Q_B=Q_0e^{-t/CR_B}$$time constant, $$\tau_A=CR_A$$ and $$\tau_B=CR_B$$as $$R_A>R_B$$ so $$\tau_A>\tau_B$$Thus A will discharge slowly than B but they will discharge completely at $$t=\infty$$.As they have same capacitance and potential so in both case heat energy will be same.PhysicsNCERTStandard XII

Suggest Corrections

0

Similar questions
View More

Same exercise questions
View More

People also searched for
View More