Answer 4th question ASAP.

Dear Student,

4.
Given : 
Current, I = 2A
Time, t = 10 min
             = 60 × 10 sec
             = 600 sec
Charge = Current × time
Q = I × t
Q = 2 × 600
Q = 1200 coulomb 
The amount of charge flowing in a wire is 1200 C.

5. 
To protect the house holding wiring and electrical devices from over loading, we should take following measures: 
1. Check the condition of wire and devices regularly and keep them in condition 
2. Do not connect more electrical device in a single socket.
3. Make sure that the live and neutral wire do not come in contact with each other. 
4. Usage of fuse will prevent the damage of electrical devices and wire.

Regards

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