A total charge $Q$ is broken in two parts $Q_1$ and $Q_2$ and they are placed at a distance $R$ from each other. The maximum force of repulsion between them will occur, when
A total charge $Q$ is broken in two parts $Q_1$ and $Q_2$ and they are placed at a distance $R$ from each other. The maximum force of repulsion between them will occur, when
- A
${Q_2} = \frac{Q}{R},{Q_1} = Q - \frac{Q}{R}$
- B
${Q_2} = \frac{Q}{4},{Q_1} = Q - \frac{{2Q}}{3}$
- C
${Q_2} = \frac{Q}{4},{Q_1} = \frac{{3Q}}{4}$
- D
${Q_1} = \frac{Q}{2},{Q_2} = \frac{Q}{2}$
Similar Questions
Electric potential at an equatorial point of a small dipole with dipole moment $P$ ( $r$ , distance from the dipole) is
Electric potential at an equatorial point of a small dipole with dipole moment $P$ ( $r$ , distance from the dipole) is
The electric flux from a cube of edge $l$ is $\phi $. If an edge of the cube is made $2l$ and the charge enclosed is halved, its value will be
The electric flux from a cube of edge $l$ is $\phi $. If an edge of the cube is made $2l$ and the charge enclosed is halved, its value will be
Two identical balls having like charges and placed at a certain distance apart repel each other with a certain force. They are brought in contact and then moved apart to a distance equal to half their initial separation. The force of repulsion between them increases $4.5$ times in comparison with the initial value. The ratio of the initial charges of the balls is
Two identical balls having like charges and placed at a certain distance apart repel each other with a certain force. They are brought in contact and then moved apart to a distance equal to half their initial separation. The force of repulsion between them increases $4.5$ times in comparison with the initial value. The ratio of the initial charges of the balls is
A parallel plate capacitor of capacitance $C$ is connected to a battery and is charged to a potential difference $V$. Another capacitor of capacitance $2C$ is connected to another battery and is charged to potential difference $2V$ . The charging batteries are now disconnected and the capacitors are connected in parallel to each other in such a way that the positive terminal of one is connected to the negative terminal of the other. The final energy of the configuration is
A parallel plate capacitor of capacitance $C$ is connected to a battery and is charged to a potential difference $V$. Another capacitor of capacitance $2C$ is connected to another battery and is charged to potential difference $2V$ . The charging batteries are now disconnected and the capacitors are connected in parallel to each other in such a way that the positive terminal of one is connected to the negative terminal of the other. The final energy of the configuration is
The resultant capacitance between $A$ and $B$ in the fig. is.....$\mu F$
The resultant capacitance between $A$ and $B$ in the fig. is.....$\mu F$