Question

which is the right ans ñ also explain it. also tell the question is for which class?

Answer 1

$\huge\bold\mathbb\red{ANSWER}$
In the given figure or
According to figure,
Option (B) Bells II and III only are the correct answer because in bell I, the use of wooden rod and wood is the bad conductor of heat and electricity. So, here the circuit will ❌ not ring.
In second bell, circuit will ring because silver coin is a good conductor of electricity and heat also. So, it is pass electricity.
In third bell , the electricity pass by copper strip and the electricity pass from the bell .Then, the circuit will ring.
It is question of class 10th (approx).
I hope that your's answer.