A 10,000 kg traveling 15m/s strikes a second car which is at rest (not moving). The two stick together and move off with speed o
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Answer:
Explanation:
The wires are in circular shape . They have common center .
magnetic field due to circular wire is given by the formula
B =
where I is current , r is radius of the coil .
magnetic field due to inner wire
=
magnetic field due to outer wire
=
These should be equal and opposite so that by cancelling each other , they create zero field.
=
I = 16.66 A
Direction of current should be in opposite direction ie anticlockwise when looking from above.