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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two semicircular rings lying in same plane, of uniform linear charge density `lambda` have radius r and 2r. They are joined using two straight uniformly charged wires of linear charge density `lambda` and length r as shown in figure. The magnitude of electric field at common centre of semi circular rings is –

Two semicircular rings lying in same plane, of uniform linear charge density `lambda` have radius r and 2r. They are joined using two straight uniformly charged wires of linear charge density `lambda` and length r as shown in figure. The magnitude of electric field at common centre of semi circular rings is –

2q 3q and 4q are placed at the corner A B C and D of a square as shown in the fig Charges q The direction of electric field at the centre of the square is along Two semicircular rings lying in same plane