Assertion: Current can be induced in a coil by changing the magnetic field around it.
Reason: A Galvanometer connected to a coil can deflect either to the left or right of the zero mark.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct, but reason is not the correct explanation of assertion.
Assertion is true, but reason is false.
Assertion is false, but reason is true.
(2)
Current is induced in a coil due to a changing magnetic field and this process is known as electromagnetic induction.
Galvanometer is a device that detects the presence of current by deflecting the needle to one side of the zero mark but this does not explain the current induced in the coil. Thus both assertion and reason are correct and reason is not the correct explanation of the assertion.
Assertion: Electric generator uses mechanical energy and converts it into electrical energy.
Reason: Electric generator works on the principle of electromagnetic induction.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct, but reason is not the correct explanation of assertion.
Assertion is true, but reason is false.
Assertion is false, but reason is true.
(1)
The axle of the generator is mechanically rotated to rotate the coil inside the magnetic field. The rotating coil is kept between two poles of a permanent magnet. Due to the electromagnetic induction electricity is produced through the coils. Thus, both assertion and reason are correct and reason is the correct explanation of assertion.
Assertion: A fault occurred in the domestic lines, but all the equipment’s are safe.
Reason: Potential difference is only 220 V in our country in domestic lines.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct, but reason is not the correct explanation of assertion.
Assertion is true, but reason is false.
Assertion is false, but reason is true.
(2)
As when a fault occurs in the domestic lines there is a protective device called fuse which breaks the circuit and protects all the equipments by melting the low melting point wire wrapped to it in order to interrupt supply. Thus, both assertion and reason are correct but reason is not the correct explanation of the assertion.
Assertion: In an AC electric generator, a current is induced in the coil as the coil rotates between the poles of a permanent magnet.
Reason: The force due to the magnetic field makes the coil rotate in an AC electric generator.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct, but reason is not the correct explanation of assertion.
Assertion is true, but reason is false.
Assertion is false, but reason is true.
(3)
When the armature rotates between the poles of the magnet upon an axis perpendicular to the magnetic field, the flux which links with the armature changes continuously. Due to this, an emf is induced in the armature. This produces an electric current through the galvanometer and the slip rings and brushes and the coil moves in an AC generator in this way. Thus, assertion is true, but reason is false.
