Physics
Grade-10
Easy
Question
Choose the correct option by reading the following statements:
Assertion: The induced emf in a conducting loop of wire will be nonzero when it rotates in a uniform magnetic field.
Reason: The emf is induced due to a change in magnetic flux.
- Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
- The assertion and reason both are false.
- Both assertion and reason are true, and the reason is the correct explanation of the assertion.
- Assertion is false but the reason is true.
Hint:
The emf will be non-zero when the coil is rotating in the magnetic field. This is because a change in the magnetic flux induces emf.
The correct answer is: Both assertion and reason are true, and the reason is the correct explanation of the assertion.
Both assertion and reason are true, and the reason is the correct explanation of the assertion.
- The emf depends on the relative motion between the magnetic flux and the coil.
- The emf becomes non-zero when the coil rotates in the magnetic field.
- This is because the emf is induced when there is a change in the magnetic flux in the coil in relation to the magnetic field.
-
As the coil rotates, the magnetic flux linked with the coil will change and emf will get induced in the loop.
As the coil rotates, the magnetic flux linked with the coil will change and emf will get induced in the loop.
Related Questions to study
Physics
An induced emf is induced in the circuit whenever the magnetic flux is related to a coil change:
I. for short, the e.m.f. lasts
II. for an extended period of time
III. for as long as the flux is changing
The correct statement(s) is/are
An induced emf is induced in the circuit whenever the magnetic flux is related to a coil change:
I. for short, the e.m.f. lasts
II. for an extended period of time
III. for as long as the flux is changing
The correct statement(s) is/are
PhysicsGrade-10
Physics
Choose the correct option from the following statements.
Assertion: The movement of a conductor in a magnetic field can induce an emf.
Reason: A change of the magnetic field might cause an emf.
Choose the correct option from the following statements.
Assertion: The movement of a conductor in a magnetic field can induce an emf.
Reason: A change of the magnetic field might cause an emf.
PhysicsGrade-10
Physics
Consider a coil and a magnet.
Current is induced in the coil when:
I. coil and magnet both are at rest.
II. the coil is at rest and the magnet moves along x.
III. magnet is at rest and coil moves along x.
IV. both coil and magnet move along y with the same speed.
The correct statements are:
Consider a coil and a magnet.
Current is induced in the coil when:
I. coil and magnet both are at rest.
II. the coil is at rest and the magnet moves along x.
III. magnet is at rest and coil moves along x.
IV. both coil and magnet move along y with the same speed.
The correct statements are:
PhysicsGrade-10
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When a bar magnet is pushed towards the coil connected in series with a galvanometer, the pointer in the galvanometer G:
When a bar magnet is pushed towards the coil connected in series with a galvanometer, the pointer in the galvanometer G:
PhysicsGrade-10
Physics
A loop is formed by connecting a coil of insulated copper wire to a galvanometer, and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved along its axis
There will be an induced current in:
A loop is formed by connecting a coil of insulated copper wire to a galvanometer, and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved along its axis
There will be an induced current in:
PhysicsGrade-10
Physics
A current can be induced in a coil by:
A current can be induced in a coil by:
PhysicsGrade-10
Physics
Electromagnetic induction is defined as the following:
Electromagnetic induction is defined as the following:
PhysicsGrade-10
Physics
In a magnetic field, a rectangular coil of copper wires is rotated. Once in each rotation, the direction of induced current changes.
In a magnetic field, a rectangular coil of copper wires is rotated. Once in each rotation, the direction of induced current changes.
PhysicsGrade-10
Physics
The rectangular coil of the electric generator executes ______ motion.
The rectangular coil of the electric generator executes ______ motion.
PhysicsGrade-10
Physics
No current gets induced in the coil when it is
No current gets induced in the coil when it is
PhysicsGrade-10
Physics
The induced current in the coil placed in a magnetic field is zero when the angle between the direction of motion of wire and the direction of the magnetic field is
The induced current in the coil placed in a magnetic field is zero when the angle between the direction of motion of wire and the direction of the magnetic field is
PhysicsGrade-10
Physics
In an electric generator, which force is used to rotate the coil?
In an electric generator, which force is used to rotate the coil?
PhysicsGrade-10
Physics
Induced current's direction in a wire that is moving in a magnetic field can be determined using:
Induced current's direction in a wire that is moving in a magnetic field can be determined using:
PhysicsGrade-10
Physics
Which of the following is constructed on the principle of electromagnetic induction?
Which of the following is constructed on the principle of electromagnetic induction?
PhysicsGrade-10
