What happens to the direction of rotation of a motor if both current and magnetic field were reversed simultaneously?
When the current is reversed the rotational direction of the motor is also reversed. … Now,when we change both the electric current and magnetic field simultaneously, the direction of the rotation of the motor stays the same. Because the reversion of the direction by each of the elements are cancelled by each other.
What happens to the direction of the magnetic force if the current is reversed?
Answer: The magnetic field generated is always perpendicular to the direction of the current and parallel to the solonoid. Hence if we reverse the current the direction of magnetism also reverses. In other words the magnetic poles gets reversed (North pole becomes south pole and the south pole becomes the north pole).
What happened to the direction and pattern of the magnetic field if the electric current flow is reversed?
When the current is reversed, the direction of the magnetic field through the centre of the coil and around the wires is reversed. The magnetic field is strongest inside the coil. This is because the effects of both sides of the vertical part of the wires add up at the centre.
What would happen to the direction of rotation of a motor if?
Answer : (i) When the current were reversed then in that case the rotation of the motor would be reversed. (ii) When the magnetic field were reversed then in that case the rotation of the motor would reverse.
In what way can a motor be made more powerful?
Motor can be made more powerful by winding the coil on a soft iron core of by increasing the number of turns of the coil.
How will this force change if current in conductor is increased?
A larger current in the conductor will result in a larger force acting on it if the strength of the magnetic field is kept constant, as shown in Figure. The magnitude of the force on a current carrying conductor increases when the strength of the magnetic held is increased.
How do you reverse the direction of force?
The direction of the current must be reversed every half turn, otherwise the coil comes to a halt again. This is achieved using a conducting ring split in two, called a split ring or commutator. A coil of wire is used with lots of turns to increase the effect of the magnetic field.
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.
What happens to magnetic field when current is increased?
When a direct electric current is passed through it, the shape of the magnetic field is very similar to the field of a bar magnet. … The strength of the magnetic field around a solenoid can be increased by: increasing the number of turns on the coil. increasing the current.
What will happen if direction of current in solenoid is reversed?
If the current in a solenoid is reversed in direction while keeping the same magnitude, the magnetic field energy stored in the solenoid decreases.
What happens when electric field is reversed?
The electric field points from the positive to the negative plate- left to right. … An electron will move in the opposite direction of the electric field because of its negative charge. Therefore it will move toward the left.