- AElectron
- BProton
- CNeutron
- DPositron
Explanation:
Conductors have lots of free electrons that can carry electricity if the potential difference is applied across them. Protons are positively charged particle and Neutron are electrically neutral. They don’t carry electricity in conductors.
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The capacity of a parallel plate capacitor with no dielectric substance but with a separation of 0.4 cm is 2 μF. The separation is reduced to half and it is filled with a dielectric substance of value 2.8. The final capacity of the capacitor is
|
(a) 11.2 μF |
(b) 15.6 μF |
(c) 19.2 μF |
(d) 22. 4 μF |
$\frac{\lambda}{4}$
$\frac{\lambda}{3}$
$\frac{\lambda}{2}$
$\lambda.$
Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point M of the hypotenuse
|
(a) 1 |
(b) 2 |
(c) 3 |
(d) 4 |
In Young's experiment, one slit is covered with a blue filter and the other (slit) with a yellow filter. Then the interference pattern
|
(a) Will be blue |
(b) Will be yellow |
(c) Will be green |
(d) Will not be formed |