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The two wires of length l are placed at an equal distance start fraction d over 2 end fraction from the origin parallel and opposite to each other. The wires carry the currents I sub 1 and I sub 2 along the z-axis. The wires attract each other with an equal and opposite forces F sub 1 and F sub 2. The magnetic field B sub 2 around the second wire is in clockwise direction.

The input value is as follow:

A number line displays numbers from 0.0 to 1.0 from left to right. A pointer is highlighted on the line at distance d equals 0.05 left bracket meter right bracket.

A number line displays numbers from negative 10.0 to 10.0 from left to right. A pointer is highlighted on the line at current I sub 1 equals 1.0 left bracket ampere right bracket.

A number line displays numbers from negative 10.0 to 10.0 from left to right. A pointer is highlighted on the line at current I sub 2 equals 1.0 left bracket ampere right bracket.

A number line displays numbers from 0.0 to 1.0 from left to right. A pointer is highlighted on the line at wire length l equals 0.5 left bracket meter right bracket.

Magnetic induction

B sub 1 equals negative 0.4 times 10 to the power of negative 6 caret x left bracket T right bracket

B sub 2 equals 0.4 times 10 to the power of negative 6 caret x left bracket T right bracket

Total magnetic force on wires

F sub 1 equals 0.2 times 10 to the power of negative 6 caret y left bracket N right bracket

F sub 2 equals negative 0.2 times 10 to the power of negative 6 caret y left bracket N right bracket

Magnetic force per unit length

F prime sub 1 equals 0.4 times 10 to the power of negative 6 caret y left bracket N per m right bracket

F prime sub 2 equals negative 0.4 times 10 to the power of negative 6 caret y left bracket N per m right bracket

A radio button is off that reads B sub 1

A radio button is on that reads B sub 2