A galvanometer has resistance of 75 ohm and experiences a full scale deflection for 0.5 mA current. What is the value of resistance to be connected to it in order to convert it into a voltmeter to read upto 1 volt potential difference ?

A triangular conducting loop having resistance R is placed outside an uniform inward magnetic field B. At t = 0 , the loop starts moving into the magnetic field with a uniform speed v. Find the ( a) magnitude of induced emf e at any time t. ( b) the magnitude and direction of induced current at any time t.

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A moving coil galvanometer, having a resistance G, produces full scale deflection when a current Ig flows through it. This galvanometer can be converted into (i) an ammeter of range 0 to I0(I0 > Ig) by connecting a shunt resistance RA to it and (ii) into a voltmeter of range 0 to V (V = GI0) by connecting a series resistance RV to it. Then,

A square loop of side l having resistance R moves with constant velocity v, through a constant magnetic field as shown in fig. Find the magnitude and direction of induced current in the situation when (i) the loop enters into magnetic field (ii) it is moving in magnetic field (iii) it is coming out of magnetic field.