Q1PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Curie temperature is the temperature
above which
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Important Questions: Para-, dia- and ferromagnetic substances with examples, the effect of temperature on magnetic properties for JEE
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Syllabus context
Part of Magnetic Effects of Current and Magnetism in JEE Main Physics.
- Biot Savart law and its application to the current carrying circular loop
- Ampere's law and its applications to infinitely long current carrying straight wire and solenoid
- Force on a moving charge in uniform magnetic and electric fields
- Force on a current-carrying conductor in a uniform magnetic field
- The force between two parallel currents carrying conductors-definition of ampere
- Torque experienced by a current loop in a uniform magnetic field: Moving coil galvanometer, its sensitivity and conversion to ammeter and voltmeter
- Current loop as a magnetic dipole and its magnetic dipole moment, bar magnet as an equivalent solenoid, magnetic field lines
- Magnetic field due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis, torque on a magnetic dipole in a uniform magnetic field
- Para-, dia- and ferromagnetic substances with examples, the effect of temperature on magnetic properties
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Q2PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Alnico is used for making permanent
magnets because it has
Q3PhysicsUnit 13: Magnetic Effects of Current and Magnetism
To make an electromagnet, the best material which should be used is
Q4PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Mark the correct set of ferromagnetic substances
Q5PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Assertion
To protect any instrument from external magnetic field, it is put inside an iron body.
Reason
Iron is a magnetic substance.
Q6PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Consider the following statements:
(i) Soft iron conducts electricity
(ii) Soft iron is magnetic material
(iii) Soft iron is used for magnetic
permanent magnets
(iv) Soft iron is used as electro magnet
Q7PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Assertion: The product of magnetic susceptibility and absolute temperature for a paramagnetic substance is constant.
Reason: Susceptibility is positive but
very small for paramagnetic substance
Q8PhysicsUnit 13: Magnetic Effects of Current and Magnetism
For diamagnetic materials, magnetic susceptibility is
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Popular questions in Para-, dia- and ferromagnetic substances with examples, the effect of temperature on magnetic properties
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