Physics
Grade-10
Easy
Question
A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference
- More in (ii) than in (i) case
- Same in both
- More in (i) than in (ii) case
- Can’t say
Hint:
The induced potential difference is more when the magnet is moved faster toward the coil.
Faraday's Law states that E= 
The correct answer is: More in (i) than in (ii) case
The induced potential difference is More in (i) than in (ii) case
- The speed of the coil or magnet makes an impact on the induced potential difference.
- When the magnet is moved quickly, the induced potential difference is more.
- When the magnet is moved slowly to the coil, the induced potential will be comparatively less.
- The rate of change of flux is higher when the magnet moves quickly, hence the induced EMF is larger in (i).
Related Questions to study
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
Physics
The phenomenon of electromagnetic induction is:
The phenomenon of electromagnetic induction is:
PhysicsGrade-10
Physics
What will happen when a magnet is taken towards a circular coil?
What will happen when a magnet is taken towards a circular coil?
PhysicsGrade-10
Physics
Two solenoids P and Q are taken. The coil in solenoid P is wound over a cylindrical wooden core and the coil in solenoid Q is wound over a soft iron core.
In which solenoid is the magnetic field stronger?
Two solenoids P and Q are taken. The coil in solenoid P is wound over a cylindrical wooden core and the coil in solenoid Q is wound over a soft iron core.
In which solenoid is the magnetic field stronger?
PhysicsGrade-10
Physics
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:
PhysicsGrade-10
