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

  1. plus comma negative comma plus comma negative comma negative comma plus    
  2. plus comma negative comma plus comma negative comma plus comma negative    
  3. plus comma plus comma negative comma plus comma negative comma negative    
  4. negative comma plus comma plus comma negative comma plus comma negative    

The correct answer is: negative comma plus comma plus comma negative comma plus comma negative


    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

    General
    Physics-

    Three charges negative q subscript 1 end subscript comma plus q subscript 2 end subscript and negative q subscript 3 end subscript are placed as shown in the figure. The x-component of the force on negative q subscript 1 end subscript is proportional to

    Three charges negative q subscript 1 end subscript comma plus q subscript 2 end subscript and negative q subscript 3 end subscript are placed as shown in the figure. The x-component of the force on negative q subscript 1 end subscript is proportional to

    Physics-General
    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 T subscript 0 end subscript. When parallel plates are charged, the time period changes to T. The ratio T divided by T subscript 0 end subscript 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 T subscript 0 end subscript. When parallel plates are charged, the time period changes to T. The ratio T divided by T subscript 0 end subscript is equal to

    Physics-General
    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
    parallel
    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 theta is so small that tan invisible function application theta almost equal to sin invisible function application theta, 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 theta is so small that tan invisible function application theta almost equal to sin invisible function application theta, then for equilibrium x is equal to

    Physics-General
    General
    Physics-

    An ellipsoidal cavity is carved within a perfect conductor. A positive charge q is placed at the centre of the cavity. The points A and B are on the cavity surface as shown in the figure. Then

    An ellipsoidal cavity is carved within a perfect conductor. A positive charge q is placed at the centre of the cavity. The points A and B are on the cavity surface as shown in the figure. Then

    Physics-General
    General
    Physics-

    A positively charged ball hangs from a silk thread. We put a positive test charge q subscript 0 end subscriptat a point and measure F divided by q subscript 0 end subscript, then it can be predicted that the electric field strength E

    A positively charged ball hangs from a silk thread. We put a positive test charge q subscript 0 end subscriptat a point and measure F divided by q subscript 0 end subscript, then it can be predicted that the electric field strength E

    Physics-General
    parallel
    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 mu C. The value of C subscript 1 end subscript 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 mu C. The value of C subscript 1 end subscript is

    Physics-General
    General
    Physics-

    Effective capacitance between A and B in the figure shown is (all capacitance are in mu F)

    Effective capacitance between A and B in the figure shown is (all capacitance are in mu F)

    Physics-General
    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
    parallel
    General
    Physics-

    The charge on 4 mF capacitor in the given circuit is .... in mu C

    The charge on 4 mF capacitor in the given circuit is .... in mu C

    Physics-General
    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
    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
    parallel
    General
    Physics-

    Three capacitors each of capacity 4 mu F are to be connected in such a way that the effective capacitance is 6 mu F. This can be done by

    Three capacitors each of capacity 4 mu F are to be connected in such a way that the effective capacitance is 6 mu F. This can be done by

    Physics-General
    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
    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
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.