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SECTION-I
(Multi Correct Choice Type)
This section contains 10 multiple choice questions. Each question has four choices (A), (B). (C) and (D) out
of which ONE OR MORE may be correct.
A particle of mass m and charge q projected in a region where an electric field is existing and given
by E —Eoi . wth a velocity Voj from the origin at time t O, then choose the correct statements
(assuming 2qEomxo
(a) radius of curvature of the particle when its x•coordinate becomes n is 2xo.
(b) radius Of curvature Of the particle When its x•coordinate becomes is 4
(c) speed of the particle when its x•coordinate becomes xo is
(d) speed of the partide when its x-coordinate becomes xa is
Two cells of unequal emfs E, and and internal resistances r, and rz are joined as shown in figure.
VP and Vo are the potential at P and Q respectively.
(a) The potential difference across both the cells equal.
(b) One Of the cell. will supply energy to the Other cell
(c) The potential difference across me of the cells will be greater than its emf.
Three pares are carrying same constant current i in different directions. Four loops enclosing the wires
in different manners are shown. The direction Of is shown in the figure.
(a) Nong closed Loop-I = —poi
(b) Along closed Loop-2 poi
(c) Along closed Loq)-3 O
(d) The net work done by the magnetic force to
move a unit charge along the loop is zerm
Loop- 1
Loop-2
4.
5.
In the circuit shown in the figure C, = Cz = C and capacitor C, is having initial charge Q The switch is
closed at t —O. Which of the following options are correct.
(a) The current at time t through the circuit will be
(b) The charge on capacitor C, at time twill be —(1
(c) The charge on the capacitor Czat time t will be —(1 -e
(d) Total heat loss in the process o' charge transfer will be —
Velocity and acceleration vector of a charged particle moving in a magnetic field at some instant are
3i * 4i and 2i + x;. Select the correct alternative (s)
(c) magnetic field is along z-direction
(d) kinetÉ energy of the particle is constant
Ltd. z. u -2. Otss.42SSJJss. 42S34ss