<p>A capacitor of 1<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#956;</mi><mi>F</mi></math>&nbsp;is connected to an a.c. source of emf&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#949;</mi></math>&nbsp;= 250 sin 100&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#960;</mi></math>t. Write an equation for instantaneous current through the circuit and give reading of a.c. ammeter connected in the circuit.</p>