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Questions and Answers
What is the principle on which devices like a telephone, an electric bell or a motor work?
What is the principle on which devices like a telephone, an electric bell or a motor work?
- Chemical effect of electricity
- Magnetic effect produced by electricity (correct)
- Optical effect of electricity
- Thermal effect of electricity
What is the property by virtue of which the attraction occurs or a substance rests in knots out direction by itself?
What is the property by virtue of which the attraction occurs or a substance rests in knots out direction by itself?
- Friction
- Electricity
- Magnetism (correct)
- Gravity
Which of the following is a non-magnetic substance?
Which of the following is a non-magnetic substance?
- Cobalt
- Plastic (correct)
- Iron
- Nickel
What happens when two magnets with the same poles are placed together?
What happens when two magnets with the same poles are placed together?
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What happens when two magnets with unlike poles are placed together?
What happens when two magnets with unlike poles are placed together?
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