Question

Three students x, y and z while performing the experiment for the verification of ohms law, connects the ammeter A, Battery B, the key K, and the resistor R, in series in 3 different orders.
X---B, K, R, A, B
Y---B, A, K, R, B
z---B, R, K, A, B
who has connected them in correct order?

Answer 1

z has arranged it correctly....

Answer 2

Answer: X has connected the circuit in correct order.

Explanation:

1. The ammeter,  A should always come after the resistor, R, across which current and voltage has to be measured.

so, here Y eliminates.

2. The key, K should always be after the battery, otherwise the circuit will not be open correctly as some components will still get the supply.

so, here Z eliminates as even if the key is open the resistor will get the supply.

Hence, X has connected the circuit in the correct order.