A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the axis of the loop is
|
(a) An end-on position |
(b) A broad side-on position |
|
(c) Both (a) and (b) |
(d) Neither (a) nor (b) |
(a) An end-on position
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Three infinitely long charge sheets are placed as shown in figure. The electric field at point P is
|
(a) |
(b) |
(c) |
(d) |
amp is flowing through a resistance of 1000Ω. To measure the correct potential difference, the voltmeter is to be used of which the resistance should be
|
(a) 0 Ω |
(b) 500 Ω |
(c) 1000 Ω |
(d) >> 1000 Ω |
No current flows between two charged bodies connected together when they have the same
|
(a) Capacitance or |
(b) Charge |
|
(c) Resistance |
(d) Potential or |
$\overrightarrow{\text{F}}\times\overrightarrow{\text{a}}$
$\overrightarrow{\text{v}}\times\overrightarrow{\text{r}}$
$\overrightarrow{\text{a}}\times\overrightarrow{\text{r}}$
$\overrightarrow{\text{F}}\times\overrightarrow{\text{r}}$
A circular disc is placed in front of a narrow source. When the point of observation is at a distance of 1 meter from the disc, then the disc covers first HPZ. The intensity at this point is I0. The intensity at a point distance 25 cm from the disc will be
|
(a) |
(b) |
(c) 
|
(d) 
|
If an observer is moving with respect to a stationary electron, then he observes
|
(a) Only magnetic field |
(b) Only electric field |
(c) Both (a) and (b) |
(d) None of the above |
