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Two point-like charges a and b whose str...

Two point-like charges a and b whose strengths are equal in absolute value are positioned at a certain distance from each other. Assuming the field strength is positive in the direction coinciding with the positive direction of the r axis, determine the signs of the charges for each distribution of the field strength between the charges shown in Figures `(a), (b), (c), and (d).`

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Two point-like charge a and b whose strengths are equal in absolute value are positioned at a certain distance from each other. Assumeing the field strenght is positive in he direction of the r axis. Determine the sign of the charge for each distribution of the field strenght between charge for each distribution of the field strenght between charges shwon in fig.

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Knowledge Check

  • Two point charges a and b whose magnitude are same, positioned at a certain distance along the positive x-axis from each other a is at origin. Graph is drawn between electrical field strength and distance x from a. E is taken positive if it is along the line joining from a to b From the graph it can be decided that

    A
    a is positive b is negative
    B
    a and b both are positive
    C
    a and b both are negative
    D
    a is negative, b is positive

  • The magnetic field strength B at the point between the capacitor plates is indicated in figure. B in terms of the rate of charge of the electric field strength, i.e., dE/dt between the plates is equal to

    A
    `(mu _(0))/( 2pi r ) (dE)/(dt)`
    B
    `(epsi _(0) mu _(0)r)/(2) (dE)/(dt)`
    C
    Zero
    D
    `(mu_(0))/(2r) (dE)/(dt)`

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    Two point charge Q_(a) and Q_(b) are positional at point A and B. The field strenght to the right of charge Q_(b) on the line that passes therough the two charges varies according to a law represented schematically in fig. (without employing a definite scale). The field strength is assumed to be positive if its direction coincedes with the positive direction of the x-axis. The distance between the charges is l=21 cm . (a) Find the sign of the charges. (b) Find the ration between the absolute value of charge Q_(a) and Q_(b) . (c ) Find the coordinate x of the point where the field strenght is maximum.

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