WorksheetsREVIEW FOR QUIZ NO .1
Total questions: 14
Worksheet time: 8mins
How will you describe the magnetic field around a straight current-carrying wire?
The magnetic field is strongest near and around the wire.
The magnetic field consists of straight lines parallel to the wire.
The magnetic field does not vary with the distance from the wire.
The magnetic field gets stronger with increasing distance from the wire.
How are the domains of an ordinary piece of metal magnet organized?
The domains are very strong.
The domains are all mixed up.
There is no such thing as domains.
The domains all point in the same direction.
What do we call a device that converts mechanical movement to electricity?
Electrical coil
Electrical field
Electrical motor
Electrical generator
It is the the amount of magnetic field that enters an area of a coil of wire.
(a)
Who was credited for discovering that a magnetic field was produced by the motion of electric charges?
Hans Oersted
Isaac Newton
Nikola Tesla
Andrei Ampere
From the equation
F= ILBsin θ , the magnetic force is (a) proportional to the magnitude of the electric current, length of wire and external magnetic field.What is the value of the magnetic force if the current carrying conductor is parallel to the direction of the magnetic field and at angle 180 degrees.
greater than zero
zero
maximum
undetermined
What is the direction of the magnetic field if the electric current is moving towards you?
clockwise
no movement
counterclockwise
alternate direction
It is a part of the electric motor that reverses the current to keep the torque turning the coil in the same direction.
stator
commutator
rectangular loop
Carbon brushes
Which of the following statements is not true?
The magnetic force depends directly on the magnitude of the charge only.
The magnetic force will be equal to zero when the wire is oriented parallel to the field.
A current-carrying conductor will interact with a magnet because it has its own magnetic field.
A changing magnetic field may also arise from a changing electric current.
What is the direction of the magnetic force in the diagram if the electric charge is negative?
(a)
A (a) is the region in space where a moving charge experiences a magnetic force.
(a) is caused by the change in the strength of the field, the orientation of the coil and the area of the coil.
He was the proponent of the Law of Electromagnetic Induction.
Hans Oersted
Andrei Ampere
Michael Faraday
James Clerk Maxwell
