Physics
Grade-10
Easy
Question
An electric motor is not a part of which one of the following electrical appliances:
- Washing machine
- Grinder
- Fan
- Heater
Hint:
Heating effect of electric current does not observed in electric motor.
The correct answer is: Heater
- Electric motor is a device which converts electrical energy into mechanical energy.
- Heating effect of electric current does not observed in electric motor.
- In washing machine ,fan ,grinder electrical energy is converted to mechanical energy
- But in Heater electrical energy is converted to heat energy hence in Heater electric motor is not used
- Heating effect of electric current does not observed in electric motor.
- In washing machine ,fan ,grinder electrical energy is converted to mechanical energy
- But in Heater electrical energy is converted to heat energy hence in Heater electric motor is not used
Related Questions to study
Physics
The direction of current in the coil at one end of an electromagnet is clockwise. This end of the electromagnet will be:
The direction of current in the coil at one end of an electromagnet is clockwise. This end of the electromagnet will be:
PhysicsGrade-10
Physics
In the given figures, there are four electromagnets. Which among them is the strongest?
In the given figures, there are four electromagnets. Which among them is the strongest?
PhysicsGrade-10
Physics
A tiny rod is wrapped in conducting coils and allowed to conduct current for a period of time. When the rod was removed, it was discovered that it did not attract iron, the material of the rod may be:
A tiny rod is wrapped in conducting coils and allowed to conduct current for a period of time. When the rod was removed, it was discovered that it did not attract iron, the material of the rod may be:
PhysicsGrade-10
Physics
Which type of magnetic field lines are formed near the current-carrying circular coil?
Which type of magnetic field lines are formed near the current-carrying circular coil?
PhysicsGrade-10
Physics
Which of the following actions will decrease the strength of the magnetic field of an electromagnet?
Which of the following actions will decrease the strength of the magnetic field of an electromagnet?
PhysicsGrade-10
Physics
Study the statements given below:
(i) Electromagnets can be made more powerful than ordinary bar magnets.
(ii) Soft iron core is used in electromagnets
(iii) The poles of an electromagnet are not affected by the direction of the current.
Which of the above statements about the electromagnets is/are correct?
Study the statements given below:
(i) Electromagnets can be made more powerful than ordinary bar magnets.
(ii) Soft iron core is used in electromagnets
(iii) The poles of an electromagnet are not affected by the direction of the current.
Which of the above statements about the electromagnets is/are correct?
PhysicsGrade-10
Physics
The strength of the magnetic field due to a solenoid can be increased by:
The strength of the magnetic field due to a solenoid can be increased by:
PhysicsGrade-10
Physics
Read the following statements and choose the correct option:
Assertion: The strength of an electromagnet depends on the number of turns in the solenoid.
Reason: Electromagnet is a temporary magnet.
Read the following statements and choose the correct option:
Assertion: The strength of an electromagnet depends on the number of turns in the solenoid.
Reason: Electromagnet is a temporary magnet.
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
Physics
The magnetic field lines inside a long current-carrying solenoid are approximately-
The magnetic field lines inside a long current-carrying solenoid are approximately-
PhysicsGrade-10
Physics
The front face of a circular wire-carrying current behaves like a north pole. The direction of current in this face of the circular wire is:
The front face of a circular wire-carrying current behaves like a north pole. The direction of current in this face of the circular wire is:
PhysicsGrade-10
Physics
Magnetic field due to a current through a conducting loop depends on:
Magnetic field due to a current through a conducting loop depends on:
PhysicsGrade-10
Physics
The magnetic field strength due to a solenoid carrying current:
The magnetic field strength due to a solenoid carrying current:
PhysicsGrade-10
Physics
The strength of the magnetic field inside a long current carrying solenoid is:
The strength of the magnetic field inside a long current carrying solenoid is:
PhysicsGrade-10
Physics
An electromagnet is based on:
An electromagnet is based on:
PhysicsGrade-10
