Current Electricity Charging Discharging Of Capacitors Question 229

Question: The circuit shown here is used to compare the e.m.f. of two cells $ E _{1} $ and $ E _{2}(E _{1}>E _{2}) $ . The null point is at C when the galvanometer is connected to $ E _{1} $ . When the galvanometer is connected to $ E _{2} $ , the null point will be

[MP PMT 1995]

Options:

A) To the left of C

B) To the right of C

C) At C itself

D) Nowhere on AB

Show Answer

Answer:

Correct Answer: A

Solution:

$ E\propto l $ (balancing length)