Physics
Grade-10
Easy
Question
At power stations, the generator’s coil is provided with mechanical energy by a/an ____.
- Transformer
- Electric motor
- Turbine
- All the above
Hint:
In power stations, the turbine provides the mechanical energy to the generator’s coil.
The correct answer is: Turbine
At power stations, the generator’s coil is provided with mechanical energy by a turbine.
- In the power stations, mechanical energy is formed by the turbine.
- The turbine is used to transform the energy of wind, steam, and water into electrical energy.
- The turbine is celled generating units in hydropower stations.
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An induced emf is induced in the circuit whenever the magnetic flux is related to a coil change:
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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
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Choose the correct option from the following statements.
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Reason: A change of the magnetic field might cause an emf.
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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.
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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
