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Why hall voltage increases with increase in magnetic field?
Since eEH= e(V X B) As magnetic field increases the lorentz force acting on the carriers increases which in turn increases the hall field associated with the carriers and hence hall voltage increases as magnetic field is increased.
What will be the force acting on the electron due to magnetic field of the solenoid when an electron is moving with a velocity V along the axis of a long straight solenoid carrying a current I?
When an electron moves along the axis of a long straight solenoid carrying a current I, the magnetic field inside the solenoid is uniform and directed along the axis. According to the Lorentz force law, the force acting on a charged particle moving in a magnetic field is given by ( F = q(\mathbf{V} \times \mathbf{B}) ), where ( \mathbf{V} ) is the velocity of the electron and ( \mathbf{B} ) is the magnetic field. Since the velocity of the electron is parallel to the magnetic field in the solenoid, the cross product ( \mathbf{V} \times \mathbf{B} ) equals zero. Thus, the force acting on the electron due to the magnetic field of the solenoid is zero.
How can you increase the volume of a balloon without increasing the temperature?
Decrease the pressure of the surrounding environment. Thus, the force acting on the balloon from the outside decreases, allowing the air pressure that creates a force inside the balloon to have less of a counteracting force.
What is the type of force in a bar magnet suspended freely?
The type of force in a bar magnet suspended freely is magnetic force. The magnet aligns itself with the Earth's magnetic field, resulting in a net force acting on the magnet.
Which increase the amount of carbon dioxide in the atmosphere acting as a carbon source?
Respiration :)
Why do the magnetic forces acting on the coil change as the current running through the coil changes?
The magnetic forces acting on the coil change with the current because the strength of the magnetic field produced by the current in the coil is directly proportional to the current flowing through it. As the current changes, the magnetic field strength changes, leading to a change in the magnetic forces acting on the coil.
How can one determine the direction of current in a magnetic field?
To determine the direction of current in a magnetic field, you can use the right-hand rule. Point your right thumb in the direction of the current and curl your fingers in the direction of the magnetic field. Your fingers will then point in the direction of the force acting on the current.
What are two ways to increase air resistance of an object?
Increasing the surface area of the object, such as by adding flaps or a parachute, can increase air resistance. Additionally, increasing the object's speed will also increase the air resistance acting on it.
What are two ways of increasing a turning effect?
Increasing the distance between the point of rotation (fulcrum) and the applied force (increase in lever arm). Increasing the magnitude of the applied force acting perpendicular to the lever arm (increase in force).
When a magnetic field is parallel to a current-carrying wire what is the force on the wire?
When a magnetic field is parallel to a current-carrying wire, there is no force acting on the wire. This is because the magnetic force on a current-carrying wire is perpendicular to both the current and the magnetic field.
What happens to a current carrying wire in a magnetic field when it is reversed?
When the direction of the current in a wire is reversed in a magnetic field, the direction of the force acting on the wire also reverses. This causes the wire to move in the opposite direction within the magnetic field.
What happens to a current carrying wire in a magnetic field if the current is reversed?
In that case, the magnetic field caused by the current would also be reversed. As for the wire itself, it would feel a force in the opposite direction, due to the interaction of the magnetic fields.
What ways can you increase the acceleration of an object?
You can increase the acceleration of an object by applying a greater force to it, reducing its mass, or reducing the friction acting on it. Increasing the slope of the surface it is moving on can also increase its acceleration.
What is the purpose of Fleming's right hand rule?
Fleming's right hand rule is used to determine the direction of the magnetic force on a current-carrying conductor in a magnetic field. By aligning the thumb with the direction of current flow, the forefinger with the direction of the magnetic field, the middle finger points in the direction of the magnetic force acting on the conductor.
How can you change the weight of an object?
You can change the weight of an object by altering its mass or the force acting on it. Increasing the mass of the object will increase its weight, while decreasing the force acting on it will decrease its weight.
What did Andre ampere discovered?
Ampere disconvered the relationship between the magnitude of an electric current and the force acting on a current-carrying conductor within a magnetic field. Thus, the unit of current, the ampere, was named in his honour.
Is it possible to orient a current loop in a uniform magnetic field such that the loop will not tend to rotate?
Yes, it is possible to orient a current loop so that it does not tend to rotate in a uniform magnetic field. This can be achieved by aligning the plane of the current loop perpendicular to the direction of the magnetic field. In this configuration, there will be no net torque acting on the loop, thus preventing it from rotating.
