Electromagnetic Induction and Faraday’s Law and Lenz Law (id: b6d740a54)

本题目来源于试卷: Electromagnetic Induction and Faraday’s Law and Lenz Law，类别为 美国物理杯赛(Physics Bowl)

[单选题]
09.37: For the figure mfww-) yct2t)(a otw*shown) s y) e:5rnl-zm(4 pewmvp8pw, the variable resistance in the circuit on the left is increased at a constant rate. What is the direction of the magnetic field at the point P at the center of the left-hand circuit and in what direction is the conventional current through the resistor in the right-hand cil y- )e58mpvp(ne: wzswr 4mp)rcuit?

A. Magnetic Field at P is Into the page Current through resistor is From B to A
B. Magnetic Field at P is Into the page Current through resistor is From A to B
C. Magnetic Field at P is Out of the page Current through resistor is From B to A
D. Magnetic Field at P is Out of the page Current through resistor is From A to B
E. Magnetic Field at P is There is no field Current through resistor is There is no current


参考答案:  A


本题详细解析: 暂无

微信扫一扫，分享更方便