Assertion (A): Magnetic force is a field force.
Reason (R): A magnet can attract or repel another magnet with zero magnitude.
A) A and R are true
B) A and R are false
C) A is true, but R is false
D) A is false, but R is true
1 Answers
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How do we determine strength of magnetic field at a given point due to a magnet? Write down units of magnetic field in SI and CGS system
i. Density of lines of force i.e., the number of lines of force per unit area around a particular point determines the strength of the magnetic field at that point. ii....
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A short bar magnet has a magnetic moment of 0.48 JT^-1. Give the direction and magnitude of the magnetic field produced
Given: m = 0.48 JT-1, r = 10 cm = 0.1 m To find: i. Magnetic induction along axis (Ba) ii. Magnetic induction along equator (Beq) Formulae: i. Ba = \(\frac{\mu_0}{4\pi}\,\frac{2m}{r^3}\) ii. Ba = 2 Beq Calculation: From formula (i), Ba = 10-7 × \(\frac{2\times0.48}{10^{-3}}\) ∴...
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Correct option is B) repel
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Correct option is A) attract
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Correct Answer - A Both, the assertion and reason are true and the latter is correct explanation of the former.
2 Answers 3 views
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Correct Answer - `B`
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This display of light is often called sparking. It occurs due to electric discharge of the electrostatic changes produced in chewing the winter green life saver.
2 Answers 6 views