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प्रश्न
A strong magnetic field is applied to a stationary electron. Then the electron ______
विकल्प
moves in the direction of the field
remained stationary
moves perpendicular to the direction of the field
moves opposite to the direction of the field
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उत्तर
A strong magnetic field is applied to a stationary electron. Then the electron remained stationary.
संबंधित प्रश्न
A conductor has 3 segments; two straight and of length L each and a semicircular with radius R. It carries a current I. What is the magnetic field B at point P?
Calculate the value of the magnetic field at a distance of 2 cm from a very long straight wire carrying a current of 5 A (Given: μ0 = 4π × 10-7 Wb/Am).
Choose the correct option:
Figures (a) and (b) show two Amperean loops associated with the conductors carrying current I in the sense shown. The `oint vecB * vecdl` in the cases (a) and (b) are, respectively.
A proton enters a perpendicular uniform magnetic field B at origin along the positive x axis with a velocity v as shown in the figure. Then it will follow the following path. [The magnetic field is directed into the paper].
Which of the following is not a unit of magnetic induction?
Explain the construction and working of the Moving coil Galvanometer.
In communication system, a repeater is used to extend the range to transmission. It is the combination of ______.
A thin light weight rod of diamagnetic substance such as silver is suspended in uniform external magnetic field. It will align itself with its length ______.
The direction of the magnetic field produced around a long straight conductor is given by ______
A vertical straight conductor carries a current vertically upwards. A point P lies to the east of it at a small distance and another point Q lies to the west at the same distance. The magnetic field at P is ______
To increase the range of voltmeter the series resistance should be ____________.
Six very long insulated copper wires are bound together to form a cable. The currents carried by the wires are l1 = + 10 A, l2 = -13 A, l3 = + 10 A, l4 = + 7 A, l5 = -12 A and l6 = + 18 A. The magnetic induction at a perpendicular distance of 10 cm from the cable is ______.
(µ0 = 4π x 10-7 Wb/A-m)
The range of the voltmeter is 'V' when 50 n resistance is connected in series. Its range gets doubled when 500 Ω resistance is connected in series. The resistance of voltmeter is ______.
Bx and By are the magnetic fields at the centre of two coils X and Y respectively each carrying equal current. If coil X has 200 turns and 20 cm radius and coil Y has 400 turns and 20 cm radius, the ratio of Bx and By is ______.
At a certain place the angle of dip is 30° and the horizontal component of earth's magnetic field is 0.5 G The earth's total magnetic field (in G), a that certain place, is ______.
A current of I ampere flows in a wire forming a circular arc of radius r metres subtending an angle θ at the centre as shown. The magnetic field a the centre O in tesla is ______.
A beam of electrons is moving with constant velocity in a region having simultaneous perpendicular electric and magnetic fields of strength 20 vm-1 and 0.5 T respectively at right angles to the direction of motion of the electrons. Then the velocity of electrons must be ______.
The ratio of magnetic fields due to a bar magnet at the two axial points P1 and P2 which are separated from each other by 10 cm is 25 : 2. Points P1 is situated at 10 cm from the centre of the magnet. Magnetic length of the bar magnet is ______.
(Points P1 and P2 are on the same side of magnet and distance of P2 from the centre is greater than distance of P1 from the centre of magnet)
