Moving Charges and Magnetism — Physics STD 12 Science — Question

Moving charge produces:

The output of OR gate is 1

(a) If both inputs are zero	(b) If either or both inputs are 1
(c) Only if both input are 1	(d) If either input is zero

A condenser has a capacity 2μF and is charged to a voltage of 50 V. The energy stored is

(a) 25 × 105 Joule

(b) 25 Joule

(c) 25 × 10 erg

(d) 25 × 103 erg

A uniform electric field having a magnitude  and direction along the positive X - axis exists. If the potential V is zero at x = 0, then its value at X = +x  will be

(a)

(b)

(c)

(d)

Force acting upon a charged particle kept between the plates of a charged condenser is F. If one plate of the condenser is removed, then the force acting on the same particle will become

(a)  0

(b) F/2

(c) F

(d) 2F

The wavefronts of a light wave travelling in vacuum are given by x + y + z = c. The angle made by the direction of propagation of light with the X-axis is:

A mark at the bottom of a liquid appears to rise by 0.1 m. The depth of the liquid is 1 m. The refractive index of the liquid is

(a) 1.33

(b)

(c)

(b) 1.5

Figure shows the cross-sectional view of the hollow cylindrical conductor with inner radius 'R' and outer radius '2R', cylinder carrying uniformly distributed current along it's axis. The magnetic induction at point 'P' at a distance  from the axis of the cylinder will be

(a) Zero

(b)

(c)

(d)