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प्रश्न
A strong magnetic field is applied to a stationary electron. Then the electron ______
पर्याय
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
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].
What happens to the magnetic field at the centre of a circular current-carrying coil if we double the radius of the coil keeping the current unchanged?
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 ______.
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 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 ______.
Two particles X and Y having equal charges after being accelerated through same potential difference enter a region of uniform magnetic field and describe a circular paths of radii r1 and r2 respectively. The ratio of the mass of X to that of Y is ______.
Two circular coils A and B are made from the same wire but the radius of coil A is twice that of coil B. If the magnetic fields at their centres are the same, then the ratio of potential differences applied across A to that of B is ______.
Determine the motional emf induced in a straight conductor rotating in a uniform magnetic field with constant angular velocity about a transverse axis through one end.
