Question

A coil is kept perpendicular to page. At P, current flows into the page and at Q it comes out of the page as shown in figure. What is the direction of magnetic field due to the coil?

Answer 1

At the top, anti-clockwise direction. At the bottom, clockwise direction. 

Try This:

• Take a test tube and wound minimum 50 turns of 24 gauge insulated copper wire with 2cms length at the centre of test tube as shown in figure, ‘l Now solenoid is ready. 
• Take 3cms length of iron nail and make it floats on water with appropriate foam (thermocol) on the water. 
• Now connect the j two ends of solenoid two 3-6 volts battery eliminator and switch on the eliminator. 
• You can observe the motion of the nail towards the solenoid. (If not move decrease the water level or increase the potential). 
• Try to explain motion of the nail into the water using solenoid concept.