HARD
12th Odisha Board
IMPORTANT
Earn 100
State and explain Biot-Savart law.
Important Questions on Magnetic Effect of Electric Current
MEDIUM
12th Odisha Board
IMPORTANT
A cable carrying a direct current is buried in a wall that stands in a north-south plane. On the west side of the wall a horizontal compass needle points south instead of north. What are the position of the cable.
MEDIUM
12th Odisha Board
IMPORTANT
A cable carrying a direct current is buried in a wall that stands in a north-south plane. On the west side of the wall a horizontal compass needle points south instead of north. What is the direction of the current in the cable?
HARD
12th Odisha Board
IMPORTANT
A stream of electrons is projected horizontally towards right. A magnet brought near the electron beam produces a field directed downward. Explain what happens.
HARD
12th Odisha Board
IMPORTANT
What sort of path will electrically charge particles follow if they are initially moving at right angle to uniform flux density in vacuum? Will such particles experience an energy change during this motion? Explain briefly.
HARD
12th Odisha Board
IMPORTANT
Why are magnetic fields used in many machine designed to accelerate charged particles to high energy?
MEDIUM
12th Odisha Board
IMPORTANT
In what respects are the actions of a galvanometer and a motor similar?
HARD
12th Odisha Board
IMPORTANT
Plot a curve to show the variation of the torque on a coil in a magnetic field as the plane of the coil is rotated with respect to the field.
HARD
12th Odisha Board
IMPORTANT
In electronics, wires that carry equal but opposite currents are often twisted together to reduce their magnetic effect at distance points. Why is this effective?
