Physics
Grade-10
Easy
Question
The emf produced in a wire by its motion across a magnetic field does not depend upon :
- Speed of the wire
- Length of the wire
- Orientation of the wire
- The composition of the wire
Hint:
The induced emf depends on the size, number of coils, and orientation of wires.
The correct answer is: The composition of the wire
The electromagnetic force formed by the motion in a wire does not depend on the composition of the wire.
- An electromagnetic force is formed due to the induced, relative motion between the magnet and the wire.
- The emf depends on the size, number of coils, and orientation of wires.
- The change in magnetic flux affects induced electromagnetic field.
- When a single wire is moving, the emf is determined by its direction, length, and speed.
- But it does not depend on the composition of the wire.
Related Questions to study
Physics
An induced emf is produced when a magnet is moved into a coil. The magnitude of induced emf does not depend on:
An induced emf is produced when a magnet is moved into a coil. The magnitude of induced emf does not depend on:
PhysicsGrade-10
Physics
The magnitude of the induced e.m.f. in a conductor depends on the:
The magnitude of the induced e.m.f. in a conductor depends on the:
PhysicsGrade-10
Physics
The condition for the phenomenon of electromagnetic induction is that there must be a relative motion between:
The condition for the phenomenon of electromagnetic induction is that there must be a relative motion between:
PhysicsGrade-10
Physics
A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference
A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference
PhysicsGrade-10
Physics
On reversing the direction of current in a wire the magnetic field produced by it:
On reversing the direction of current in a wire the magnetic field produced by it:
PhysicsGrade-10
Physics
Assertion (A): When the current in a coil changes, it induces a back emf in the same coil.
Reason (R): Emf is a measure of the inertia of the coil against the change of current through it.
Assertion (A): When the current in a coil changes, it induces a back emf in the same coil.
Reason (R): Emf is a measure of the inertia of the coil against the change of current through it.
PhysicsGrade-10
Physics
A bar magnet moves towards two identical parallel circular loops with a constant velocity v as shown in fig.
A bar magnet moves towards two identical parallel circular loops with a constant velocity v as shown in fig.
PhysicsGrade-10
Physics
A bar magnet is moved between two parallel circular loops A and B with a constant velocity v as shown in fig.
A bar magnet is moved between two parallel circular loops A and B with a constant velocity v as shown in fig.
PhysicsGrade-10
Physics
A coil is moved towards a stationary magnet. The voltage induced in the coil depends on_________.
A coil is moved towards a stationary magnet. The voltage induced in the coil depends on_________.
PhysicsGrade-10
Physics
A magnet is allowed to fall through a metal ring. During the fall:
A magnet is allowed to fall through a metal ring. During the fall:
PhysicsGrade-10
Physics
When a magnet M is pushed in and out of a circular coil C connected to a very sensitive galvanometer G as shown in fig.
When a magnet M is pushed in and out of a circular coil C connected to a very sensitive galvanometer G as shown in fig.
PhysicsGrade-10
Physics
In the phenomenon of electromagnetic induction, _____________ energy of the coil or magnet is converted to ___________ energy.
In the phenomenon of electromagnetic induction, _____________ energy of the coil or magnet is converted to ___________ energy.
PhysicsGrade-10
Physics
A magnet and a coil are taken. In which of the following cases, emf is not induced in the coil?
A magnet and a coil are taken. In which of the following cases, emf is not induced in the coil?
PhysicsGrade-10
Physics
The process of Inducing current in a coil of wire by placing it in a region of changing magnetic field is:
The process of Inducing current in a coil of wire by placing it in a region of changing magnetic field is:
PhysicsGrade-10
Physics
What is that instrument which can detect the presence of electric current in a circuit?
What is that instrument which can detect the presence of electric current in a circuit?
PhysicsGrade-10
