4 14 The configuration of some current carrying wires is shown in figure 4 217 All straight wires are very long Both AB and CD

Question

4 14 The configuration of some current carrying wires is shown in figure 4 217 All straight wires are very long Both AB and CD are arcs of the same circle both subtending right angles at the centre O The magnetic field at O is A C Hoi 4 R Hoi 2 R B B R D Figure 4 217 B D Hoi 2 4TR Moi 2 R C 1

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