alleryStart learning →By the Biot-Savart law, the field at a point on the line of a current element is
AMaximum value
BInfinitely large
CExactly zero
DHalf the maximum
Answer & Solution
Correct answer: C. Exactly zero
With the point along dl the angle is zero, so sin(theta) vanishes and the contribution is zero.
Keep practising Moving Charges and Magnetism
Browse all Moving Charges and Magnetism questions for AP EAMCET, or explore more Physics topics.
Related questions
Fields from several magnetic sources combine byMagnetic field lines due to a currentVelocity along +x and B along +y: the force on a proton points alongCurling the right-hand fingers along a loop current, the thumb showsWhich change raises the current sensitivity of a galvanometer?The deflection of a moving coil galvanometer is proportional to theIn a moving coil galvanometer the deflecting torque is balanced byA single loop of area 0.02 m^2 carries 5 A with its plane parallel to a 0.1 T field. Torqu