JEE Main Solved Paper 2017 Question 3
Question: Which of the following statements is false? [JEE Main Solved Paper-2017]
Options:
A) A rheostat can be used as a potential divider
B) Kirchhoff’s second law represents energy conservation
C) Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude.
D) In a balanced wheat stone bridge if the cell and the galvanometer are exchanged, the null point is disturbed. [JEE Main 2017]
Show Answer
Answer:
Correct Answer: D
Solution:
- [A] On interchanging Cell & Galvanometer. On balancing condition $ \frac{R _1}{R _3}=\frac{R _2}{R _4} $ ?. [a] On balancing condition $ \frac{R _1}{R _2}=\frac{R _3}{R} $ As we see both equation [a] & [b] are same. So 4th statement is false.
