Thank you for visiting The force per meter between the two wires of a jumper cable being used to start a stalled car is 0 244 N m a. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!
Answer :
Answer: current I is 144amp(A)
Explanation: The force per lenght F/L, current l, and separation distance r are related by the formula
F/L = permeability of space* I²/2*pi*r
Permeability of free space is 1.257*EXP {-6} Henry/meter
F/L is 0.244 N/m, pi is 3.142,
r is 1.7cm which is equal to 0.017meter.
I is what we are looking for.
Now we have after substitution,
0.244
= 1.257*EXP {-6} * I²/(2*3.142*0.017)
After cross multiplying and making I² subject of formula we have,
0.0261/(1.257*EXP {-6}) = I²
I = √{20736.7} =144ampere(A)
That means in each of the jumper wire there is 144amp(A)
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