when seeing from the left hand side (i.e. from magnet 1) the direction of induced current appears to be Anticlockwise. Though, on seeing from the left hand side, the South pole of magnet is coming towards, according to Lenz's Law the coil will behave like a South pole, thus the direction of current is Clockwise .
How do you determine the polarity of a coil?
You can even use the right hand rule to find the polarity. Hold the coil in the right hand in such a way that the four fingers wound the coil in the direction of positive current flows . Then point the thumb out. This end of the coil will be the magnetic North Pole.
What will happen if the south pole of the magnet is going inside the coil?
Similarly, if you flip the magnet to bring its south pole towards the coil , the current flows in the direction that produces a magnetic field whose south pole faces the magnet , and if you pull the magnet away, it reverses so that the north pole faces the magnet .
What will be the polarity of one end of a solenoid?
Ans: If the current at one end of the solenoid is in the anticlockwise direction it will be the North Pole and if the current is in the clockwise direction it will be the South Pole.
What will happen when the magnet moves towards the coil?
When the magnet is stationary, there is no current in the coil. However, if we move the magnet towards the coil, the ammeter flicks to the right. ... This shows that we induced a current in the coil – but only whilst the magnet was moving. The direction of the current depended on the direction of the movement.
Which side of ignition coil is negative?
When you hold the coil so the plug wires are to the left (like standard shovel or evo mounting, mounting holes at the rear), the negative side is on the top and the positive is on the bottom.
What is Fleming's left hand rule?
Fleming's left – hand rule states that if we stretch the thumb, middle finger and the index finger of the left hand in such a way that they make an angle of 90 degrees(Perpendicular to each other) and the conductor placed in the magnetic field experiences Magnetic force.
Which electromagnet is the strongest?
Bitter electromagnets have been used to achieve the strongest continuous manmade magnetic fields on earth―up to 45 teslas, as of 2011.
What happens when there is a current in the coil?
A coil of wire (solenoid)
When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet . The field inside a solenoid is strong and uniform. The small magnetic field caused by the current in each coil add together to make a stronger overall magnetic field.
How do you tell if induced current is clockwise or counterclockwise?
A changing magnetic flux induces a current but here it is constant. c. Counterclockwise . Since the ‘dot' field is decreasing hence the induced magnetic field is'dot',i.e. Out of the page and by the right-hand rule the induced current is counter clockwise.
What will be the polarity at the end?
(a) At end X – North polarity will be formed.
What is the magnetic field inside the solenoid?
Inside a solenoid the magnetic field lines will be straight lines and the field will be strong. Outside the solenoid the magnetic field will be weak and the field lines will curl up to form closed loops. Hence, the magnetic field inside a solenoid will be uniform .
Which end of solenoid is a North Pole when current is passed through it?
Remember, that we show the lines of force coming out of the north pole and going into the south pole. When a current passes through the solenoid in picture 6, it becomes an electromagnet. So one end is a north pole and the other end is a south pole.
What is the direction of induced current in the coil?
Since current is increasing, the magnetic field also increases which results in induction of current in the coil. Applying Lenz law, the direction of induced current through the coil is anti-clockwise .
Would the induced current in the coil repel or attract the bar magnet?
Lenz's law indicates the direction of the induced current. ... Upon withdrawing the bar magnet from the coil, the induced current reverses itself , and the near side of the coil becomes a south pole to produce an attracting force on the receding bar magnet.
Where is the strongest attraction force of the magnet?
The magnetic field generated by any magnet is always strongest at either pole . The magnetic force is equally as strong at both the north and south pole.
