Physics
Grade-7
Easy
Question
Which one of the following devices is not based on the heating effect of electric current?
- Geyser
- Toaster
- Grinder
- Heater
Hint:
Grinder
The correct answer is: Grinder
The Blades of the grinder are essentially connected to a motor which rotates. The energy required to rotate the motor is electrical energy and the motion of the motor corresponds to the production of mechanical energy not heat energy.
Related Questions to study
Physics
Why are symbols used for electric components?
Why are symbols used for electric components?
PhysicsGrade-7
Physics
Electric voltage is measured by a device
Electric voltage is measured by a device
PhysicsGrade-7
Physics
When two or more cells are joined together, it forms a
When two or more cells are joined together, it forms a
PhysicsGrade-7
Physics
When excess current flows through the wire, it shows
When excess current flows through the wire, it shows
PhysicsGrade-7
Physics
The presence of current in a circuit is detected using a __________.
The presence of current in a circuit is detected using a __________.
PhysicsGrade-7
Physics
Which one of the following is a safety device?
Which one of the following is a safety device?
PhysicsGrade-7
Physics
The device used to make or break an electric circuit is
The device used to make or break an electric circuit is
PhysicsGrade-7
Physics
Electric current is measured by a device
Electric current is measured by a device
PhysicsGrade-7
Physics
A battery consists of
A battery consists of
PhysicsGrade-7
Physics
The given image is a symbol for ______.
The given image is a symbol for ______.
PhysicsGrade-7
Physics
The given image is a symbol for ______.
The given image is a symbol for ______.
PhysicsGrade-7
Biology
In animal behavior, the opposite of habituation is ___________________.
- In animal's behaviour opposite to habituation is observational learning.
In animal behavior, the opposite of habituation is ___________________.
BiologyGrade-7
- In animal's behaviour opposite to habituation is observational learning.
Biology
____________________ is monitoring another animal's behavior and then either copying or avoiding it.
- Monitoring other animal's behaviour and either copying or avoiding it is observational behaviour.
____________________ is monitoring another animal's behavior and then either copying or avoiding it.
BiologyGrade-7
- Monitoring other animal's behaviour and either copying or avoiding it is observational behaviour.
Biology
Swimming in dolphins and other aquatic animals is ____________ behavior.
- As swimming in dolphins and other aquatic animals is naturally from birth , the behaviour is called Innate behaviour.
Swimming in dolphins and other aquatic animals is ____________ behavior.
BiologyGrade-7
- As swimming in dolphins and other aquatic animals is naturally from birth , the behaviour is called Innate behaviour.
Biology
Chimpanzees eating termites from the mound with the help of a stick is an example of ____________.
- It is the example of insight learning in which animal learns or work with the help of prior experience without any error.
Chimpanzees eating termites from the mound with the help of a stick is an example of ____________.
BiologyGrade-7
- It is the example of insight learning in which animal learns or work with the help of prior experience without any error.
