Question

(1) write a letter to the metro rail authorities requesting them to keep a check on the crowd and safety measures in the metro rail​

Answer 1

Explanation:

Current flow in conductor when it is connected to 12 V battery = 0.6A

We have to find current flow in conductor when it is connected to 4.5 V battery..

First of all we need to find resistance of conductor.

As per ohm's law, current flow through a conductor is directly proportional to the applied potential difference.

V ∝ I

Where, V denoted voltage and I denotes current

In first case :

➜ V = I × R

➜ 12 = 0.6 × R

➜ R = 12/0.6

➜ R = 20 \OmegaΩ

In second case :

➝ V' = I' × R

➝ 4.5 = I' × 20

➝ I' = 4.5/20

➝ I' = 0.225A

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