PYQ Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop. 1. 1520 V 2. 1980 V 3. 660 V 4. 1320 V Ruhul Amin Alig
PMQ Two charged spherical conductors of radius R 1 and R 2 R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres ( σ 1 / σ 2 ) σ1/σ2 is: 1. √ ( R 1 R 2 ) R1R2 2. R 2 1 R 2 2 R12R22 3. R 1 R 2 R1R2 4. R 2 R 1 R2R1 Ruhul Amin Alig
PEQ The potential difference V A − V B VA-VB between the points A and B in the given figure is : The potential difference (VA - VB) between the points A and 1. -3V 2. +3V 3. +6V 4. +9V Ruhul Amin Alig
PMQ Two conducting spheres of radii 3 cm and 1 cm are separated by a distance of 10 cm in free space. If the spheres are,charged to same potential of 10 V each, the force of repulsion between them is Kerala PET 2011) Ruhul Amin Alig
