Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

Six equal resistances are connected between points P, Q and R as shown in the figure. The net resistance will be maximum between:

Options:

P and Q

Q and R

P and R

All points will have same resistance

Correct Answer:

P and Q

Explanation:

The correct answer is Option (1) → P and Q

Total resistance between P and Q = r

Total resistance between Q and R = $\frac{r}{2}$   $\left[\frac{1}{r_{eq}}=\frac{1}{r}+\frac{1}{r}\right]$

Total resistance between P and R = $\frac{r}{3}$   $\left[\frac{1}{r_{eq}}=\frac{1}{r}+\frac{1}{r}+\frac{1}{r}\right]$