two wires are oriented such that when a current of value I flows in each, they...
two wires are oriented such that when a current of value I flows in each, they experience an atttractive force F. If the direction of one of the currents is reveresed and its magnitude is doubled, what will be true of the magniture and direction of the resulting force?
a. 1/2F and attractive
b. 1/2 Force and repulsive
c. F and attractive
d. 2F and attractive
e. 2F and repulsive
Homework Answers
Answer : (e) 2F and repulsive.
Because, the force between two current carrying wires is given by :
Therefore:
Here, if the magnitude of current in one of the wire is doubled.
Then, Force will be also doubled.
And, the force between two parallel current carrying wire in anti-parallel direction will be always repulsive.
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