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NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT
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A winding wire which is used to frame a solenoid can bear a maximum current. If length of solenoid is and it's cross sectional radius is then required length of winding wire is :-
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Correct option: C
Option C () is correct because it is the calculated length of the winding wire based on the given magnetic field, current, and solenoid dimensions.
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Which of the following statements is not true
A current loop in a magnetic field
Given below are two statements:
Statement (I): When currents vary with time, Newton’s third law is valid only if momentum carried by the electromagnetic field is taken into account.
Statement (II): Ampere's circuital law does not depend on Biot-Savart’s law.
In the light of the above statements, choose the correct answer from the options given below: The magnetic field due to current carrying a circular loop of radius at a point on the axis at a distance of from the center is . The magnetic field at the center of the loop is The magnetic field due to a small current element at distance and element carrying current is Three long straight conductors carry currents 4A, 2A and 3A into the plane of paper. A circular path is imagined to be enclosing these currents. The value of b is
Statement (I): When currents vary with time, Newton’s third law is valid only if momentum carried by the electromagnetic field is taken into account.
Statement (II): Ampere's circuital law does not depend on Biot-Savart’s law.
In the light of the above statements, choose the correct answer from the options given below: The magnetic field due to current carrying a circular loop of radius at a point on the axis at a distance of from the center is . The magnetic field at the center of the loop is The magnetic field due to a small current element at distance and element carrying current is Three long straight conductors carry currents 4A, 2A and 3A into the plane of paper. A circular path is imagined to be enclosing these currents. The value of b is