Current Electricity Charging Discharging Of Capacitors Question 559

Question: Three identical resistances A, B and C are connected as shown in the given figure. The heat produced will be maximum

[MP PMT 2004]

Options:

A) In B

B) In B and C

C) In A

D) Same for A, B and C

Show Answer

Answer:

Correct Answer: C

Solution:

Resistance of A is greater than the resistance of combination of B and C, hence voltage drop across A will be greater than that across B or C. Also $ H=\frac{V^{2}t}{R} $

Therefore $ H\propto V^{2} $ so $ H _{A}>(H _{B}=H _{C}) $ (R = constant)