A circular coil is made from wire of uniform area of cross section and having resistance 12 Q. A voltmeter of resistance 10 Q is connected between the points P and Q of the coil and placed at the centre of the coil as shown in the figure. Given magnetic field within region, B = 2t Tesla. Area of circular coil is 6 m2 (Assume connecting wire has no resistance). Calculate the reading of the volt meter in volt.

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