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Questions and Answers
A wire carrying a current of 5A is placed perpendicular to a magnetic induction of 2T. The force on each centimeter of the wire is:
A wire carrying a current of 5A is placed perpendicular to a magnetic induction of 2T. The force on each centimeter of the wire is:
If a soft iron piece is buried under the surface of earth in the north and south direction, then
If a soft iron piece is buried under the surface of earth in the north and south direction, then
Force acting on a stationary charge Q in the magnetic field B is –
Force acting on a stationary charge Q in the magnetic field B is –
A proton is moving with velocity 104m/s parallel to the magnetic field of intensity 5Tesla. The force on the proton is
A proton is moving with velocity 104m/s parallel to the magnetic field of intensity 5Tesla. The force on the proton is
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A wire of length ‘l’ is placed in a magnetic field ‘B’. If the current in the wire is 'I', then maximum magnetic force on the wire is:
A wire of length ‘l’ is placed in a magnetic field ‘B’. If the current in the wire is 'I', then maximum magnetic force on the wire is:
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Which of the following statement is correct?
Which of the following statement is correct?
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A magnetic field may:
A magnetic field may:
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Lenz's law is a consequence of the law of conservation of:
Lenz's law is a consequence of the law of conservation of:
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The induced emf produced when a magnet is inserted into a coil does not depend upon:
The induced emf produced when a magnet is inserted into a coil does not depend upon:
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Lenz's law
Lenz's law
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A.C. used in our domestic consumption has a frequency
A.C. used in our domestic consumption has a frequency
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A solenoid having an iron core has its terminals connected across an ideal D.C source. If the iron core is removed the current flowing through solenoid is:
A solenoid having an iron core has its terminals connected across an ideal D.C source. If the iron core is removed the current flowing through solenoid is:
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Direction of force acting on a current carrying conductor kept in a magnetic field is given by
Direction of force acting on a current carrying conductor kept in a magnetic field is given by
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The unit of induced emf is:
The unit of induced emf is:
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Study Notes
Section 1 – Objective
- Q1: A wire carrying 5A of current perpendicular to a 2T magnetic induction experiences a 0.1N force per cm.
- Q2: A soft iron piece buried north-south will not change properties, therefore, it doesn't become a magnet and will not act as an insulator in the same direction.
- Q3: The force acting on a stationary charge (Q) within a magnetic field (B) is zero.
- Q4: A proton moving parallel to a 5 Tesla magnetic field at 104 m/s experiences zero force.
- Q5: The maximum magnetic force on a wire of length 'l' carrying current 'I' in a magnetic field 'B' is BIL.
Section 2 - Subjective
- Q1: The direction of magnetic force on a current-carrying conductor is found using Fleming's Left-hand rule.
- Q2: An electromagnet is a temporary magnet formed by a coil of wire wrapped around an iron core, whereas a permanent magnet remains magnetized. The strength of an electromagnet relies on the number of turns in the coil, current running through it, and the type of core material.
- Q3: Fleming's left-hand rule determines the direction of force on a current-carrying conductor in a magnetic field.
- Q4: The principle of a motor is that a current-carrying conductor placed in a magnetic field experiences a force, leading to rotation.
- Q5: Faraday's laws of electromagnetic induction describe how a changing magnetic field induces an electromotive force (emf) in a conductor.
- Q6: Five differences between AC (alternating current) and DC (direct current) include the direction of current flow, graph types, frequency, use cases and sources.
- Q7: Slip rings in an AC generator allow current to flow alternately, enabling continuous rotation of the armature.
- Q8: Transformer types include step-up and step-down, based on voltage increase or decrease, respectively.
- Q9: Melting point is the temperature at which a solid changes to a liquid. Latent heat is the amount of heat absorbed or released during a phase change without temperature change. Vaporization is the conversion of a liquid to a gas.
- Q10: Distinction between topics wasn't found in the text.
Additional Questions
- Q11-Q17, Q20: Calculations and properties related to thermal capacity, specific heat, phase changes, and energy conversion weren't found in the text.
- Q18-Q19: General properties (density change with temperature) weren't found in the text.
- Q21-Q23: Additional calculations and properties related to various physical factors weren't found in the text.
- Q24-Q29: Calculations and properties related to specific latent heat, heat capacity, and conversions weren't found in the text.
- Q30-Q38: Electronic and atomic properties weren't found in the text.
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Description
Test your understanding of magnetism and electromagnetism concepts with this quiz. Explore topics like magnetic force, current-carrying conductors, and electromagnets. Perfect for physics students looking to reinforce their knowledge.
