Physics
Grade-10
Easy
Question
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 in the magnetic field might cause an emf.
- Assertion is incorrect, reason is correct.
- The assertion is correct, the reason is correct; the reason is not a correct explanation for assertion.
- The assertion is correct, the reason is incorrect.
- The assertion is correct, the reason is correct; the reason is a correct explanation for assertion.
Hint:
The assertion and the reason for the emf given are correct statements. But the reason is not a correct explanation for the assertion.
The correct answer is: The assertion is correct, the reason is correct; the reason is not a correct explanation for assertion.
The assertion and the reason for the emf given are correct statements. But the reason is not a correct explanation for the assertion.
- The movement of the conductor in a magnetic field induces emf. i.e. e= Bvl
- The emf can also be induced by changing the relative motion of the magnet or coil.
- Thus, the change in the magnetic field causes a change in emf.
Related Questions to study
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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:
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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:
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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:
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The rectangular coil of the electric generator executes ______ motion.
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When a current-carrying coil C2 is moved towards a coil C1 connected in series with a galvanometer, the pointer in the galvanometer G:
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