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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 17 - Electric Charge and Field > A thin glass rod is bent into a semi-circle of radius R . A charge +Q is uniformly distributed along the upper half and a charge −Q is uniformly distributed along the lower half. The electric field E at P, the centre of the semi-circle is

A thin glass rod is bent into a semi-circle of radius R . A charge +Q is uniformly distributed along the upper half and a charge −Q is uniformly distributed along the lower half. The electric field E at P, the centre of the semi-circle is

A ring of charge with radius 0.5m has 0.002 m gap. If the ring carries a charge of +1C the electric field at the center is