Physics-
General
Easy
Question
Six charges, three positive and three negative of equal magnitude are to be placed at the vertices of a regular hexagon such that the electric field at O is double the electric field when only one positive charge of same magnitude is placed at R. Which of the following arrangements of charges is possible for P, Q, R, S, T and U respectively
The correct answer is:
If the charges are arranged according to the option (d), the electric fields due to P and S and due to Q and T add to zero, while due to U and R will be added up.
Related Questions to study
Physics-
Three charges and are placed as shown in the figure. The x-component of the force on is proportional to
Three charges and are placed as shown in the figure. The x-component of the force on is proportional to
Physics-General
Physics-
A small sphere carrying a charge ‘q’ is hanging in between two parallel plates by a string of length L. Time period of pendulum is . When parallel plates are charged, the time period changes to . The ratio is equal to
A small sphere carrying a charge ‘q’ is hanging in between two parallel plates by a string of length L. Time period of pendulum is . When parallel plates are charged, the time period changes to . The ratio is equal to
Physics-General
Physics-
Consider two points 1 and 2 in a region outside a charged sphere. Two points are not very far away from the sphere. If E and V represent the electric field vector and the electric potential, which of the following is not possible
Consider two points 1 and 2 in a region outside a charged sphere. Two points are not very far away from the sphere. If E and V represent the electric field vector and the electric potential, which of the following is not possible
Physics-General
Physics-
In the given figure two tiny conducting balls of identical mass m and identical charge q hang from non-conducting threads of equal length L. Assume that is so small that , then for equilibrium x is equal to
In the given figure two tiny conducting balls of identical mass m and identical charge q hang from non-conducting threads of equal length L. Assume that is so small that , then for equilibrium x is equal to
Physics-General
Physics-
An ellipsoidal cavity is carved within a perfect conductor. A positive charge is placed at the centre of the cavity. The points and are on the cavity surface as shown in the figure. Then
An ellipsoidal cavity is carved within a perfect conductor. A positive charge is placed at the centre of the cavity. The points and are on the cavity surface as shown in the figure. Then
Physics-General
Physics-
A positively charged ball hangs from a silk thread. We put a positive test charge at a point and measure , then it can be predicted that the electric field strength
A positively charged ball hangs from a silk thread. We put a positive test charge at a point and measure , then it can be predicted that the electric field strength
Physics-General
Physics-
Four identical capacitors are connected as shown in diagram. When a battery of 6 V is connected between A and B, the charge stored is found to be 1.5 . The value of is
Four identical capacitors are connected as shown in diagram. When a battery of 6 V is connected between A and B, the charge stored is found to be 1.5 . The value of is
Physics-General
Physics-
Effective capacitance between A and B in the figure shown is (all capacitance are in )
Effective capacitance between A and B in the figure shown is (all capacitance are in )
Physics-General
Physics-
Three plates of common surface area A are connected as shown. The effective capacitance will be
Three plates of common surface area A are connected as shown. The effective capacitance will be
Physics-General
Physics-
The charge on 4 mF capacitor in the given circuit is .... in
The charge on 4 mF capacitor in the given circuit is .... in
Physics-General
Physics-
All six capacitors shown are identical, Each can withstand maximum 200 volts between its terminals. The maximum voltage that can be safely applied between A and B is
All six capacitors shown are identical, Each can withstand maximum 200 volts between its terminals. The maximum voltage that can be safely applied between A and B is
Physics-General
Physics-
In the figure a potential of + 1200 V is given to point A and point B is earthed, what is the potential at the point P
In the figure a potential of + 1200 V is given to point A and point B is earthed, what is the potential at the point P
Physics-General
Physics-
Three capacitors each of capacity are to be connected in such a way that the effective capacitance is . This can be done by
Three capacitors each of capacity are to be connected in such a way that the effective capacitance is . This can be done by
Physics-General
Physics-
In the figure shown, the effective capacitance between the points A and B, if each has capacitance C, is
In the figure shown, the effective capacitance between the points A and B, if each has capacitance C, is
Physics-General
Physics-
Four equal capacitors, each of capacity C, are arranged as shown. The effective capacitance between A and B is
Four equal capacitors, each of capacity C, are arranged as shown. The effective capacitance between A and B is
Physics-General