Question

question 4 of 20 : select the best answer for the question. 4. suppose that youre facing a straight current-carrying conductor, and the current is flowing toward you. the lines of magnetic force at any point in the magnetic field will act in a. the direction opposite to the current. b. the same direction as the current. c. a counterclockwise direction. d. a clockwise direction. mark for review (will be highlighted on the review page) << previous question next question >>

Explanation:

To determine the direction of magnetic field lines around a current - carrying conductor, we use the right - hand rule. For a straight current - carrying conductor, if we hold the conductor in our right hand such that the thumb points in the direction of the current, the fingers curl in the direction of the magnetic field lines. Here, the current is flowing toward us. So, when we apply the right - hand rule (thumb pointing towards us), the fingers will curl in a counterclockwise direction. Option A is incorrect because the magnetic field direction is not related to being opposite to the current in this way. Option B is also incorrect as the magnetic field direction is not the same as the current direction. Option D is wrong because the correct direction, based on the right - hand rule, is counterclockwise, not clockwise.

Answer:

C. a counterclockwise direction.