Answer:
Explanation:
The power provided by a resistor (wire in this case) is given by:
.
The resistance of a wire is given by:
Where for the resistivity the one of the copper should be used: .
The area A is that of a circle, which written in terms of its diameter is:
Putting all together:
Which for our values is:
The body will <u>stay at rest </u>(Option D). It is because a force of magnitude 50 N is pulled towards left and another force is pulling it towards right with same magnitude 50 N. So, the direction of force is opposite and magnitude is same i.e. 50 N. So, they will cancel each other and net force is 0. Hence, there would be no acceleration.
Hence, these options are incorrect because they are only possible when net external force is non-zero. Staying at rest i.e. Option D means there is no motion and hence no acceleration, this shows that net force is 0
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