Two point charge ±q are placed on the axis at x=−a and x=±a , as shown in fig. (i) Plot the variation of E along the x-axis. (ii) Plot the variation of E along the y-axis.

Two point charges +-q are placed on the axis at x = -a and x = +a , as shown in figure. (a) plot the varitiation of E along the x = - axis . (b) plot the variation of E along the y - axis.

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Two identical spherical balls each of mass m are placed as shown in figure. Plot the variation of g (gravitational intensity) along the x-axis.

Two long wires carrying current I1 and I2 are arranged as shown in Fig. 4.1. The one carrying current I1 is along is the x-axis. The other carrying current I2 is along a line parallel to the y-axis given by x = 0 and z = d. Find the force exerted at O2 because of the wire along the x-axis.