HARD
12th Odisha Board
IMPORTANT
Earn 100
Obtain an expression for the torque experienced by a freely suspended current carrying loop in a uniform magnetic field. Mention the factors on which the torque depends.
Important Questions on Magnetic Effect of Electric Current
HARD
12th Odisha Board
IMPORTANT
Give the principle of construction and working of a moving coil galvanometer. Can a galvanometer be used to measure current? Explain your answer.
HARD
12th Odisha Board
IMPORTANT
Describe the construction and working of an ammeter. How is an ammeter connected in a circuit and why?
HARD
12th Odisha Board
IMPORTANT
Describe the construction and working of a voltmeter. How is a voltmeter connected in a a circuit? Explain.
HARD
12th Odisha Board
IMPORTANT
Give the principle, construction and working of an ammeter. How is its range changed? Explain with necessary mathematical equations.
MEDIUM
12th Odisha Board
IMPORTANT
Discuss how a moving coil galvanometer is converted into a voltmeter of different ranges.
HARD
12th Odisha Board
IMPORTANT
Give the principle of construction of a dead beat type galvanometer. Explain galvanometer sensitivity.
HARD
12th Odisha Board
IMPORTANT
A beam of positively charged particles moves vertically upwards and another beam of negatively charged particles moving vertically downwards. Do the two beams attract or repel. Explain with a necessary mathematical equation.
HARD
12th Odisha Board
IMPORTANT
Helmholtz coils consist of two large flat circular coils mounted with a common axis and at distance apart equal to their common radius. Show that this arrangement produces a uniform magnetic flux density over a small space midway between the coils. Derive an equation for this flux density when the coils have the same current in the direction to produce additive effect.
