Field lines comparison between an air core and iron core electromagnet.... | Download Scientific Diagram
![Answer the question:An electromagnet with a soft - iron core is connected to a battery and an open switch. The soft - iron core is just above some small soft - iron Answer the question:An electromagnet with a soft - iron core is connected to a battery and an open switch. The soft - iron core is just above some small soft - iron](https://haygot.s3.amazonaws.com/questions/1912327_e56591d484bd43d3ba2a2999a28f6112.png)
Answer the question:An electromagnet with a soft - iron core is connected to a battery and an open switch. The soft - iron core is just above some small soft - iron
![The adjacent diagram shows a coil wound around a soft iron bar XY. How can the strength of the electromagnet be increased? The adjacent diagram shows a coil wound around a soft iron bar XY. How can the strength of the electromagnet be increased?](https://haygot.s3.amazonaws.com/questions/195676_176819_ans_50d6f97076b6404687b037559d6caab0.png)