Consider the circuit in which a coil (an inductor) is connected to a battery. Pr

Question

Consider the circuit in which a coil (an inductor) is connected to a battery. Predict the direction of the magnetic field at points A (along the axis, outside the coil), B (along the axis, inside the coil), and C (outside, along the inside of the coil) after the switch is closed.

Hint: Consider the direction of the current flow.

This is Prediction 1-3 of your lab manual. Write in your prediction here and in your lab manual. Your TA will come around during the first few minutes of your lab to check that you completed this prediction. Points A and B are on the axis of the coil and C is outside the coil. Push type switch ·A Y(battery) O A, B, and C are pointing to the left OA and B are pointing opposite to each other and C is zero O A and B are pointing to the left and C is zero O A, B, and C are pointing to the right O A and B are pointing to the left and C is pointing more to the right A and B are pointing to the right and C is pointing more to the left O A and B are pointing to the right and C is zero

Explanation / Answer

At A,B and C magnetic field will point to the left.

If we observe current at A then it is flowing in clock wise dieection ,so according to right hand thumb rule magnetic field at A will be inword ie. left direction.

At pont B current is in anticlockwise direction .so according to right hand thumb rule magnetic field at B will be outword ie. in left direction.

so the direction of magnetic field is in left direction.

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