1) In Figure 1, with R1 > R2, is the potential difference between the terminals of R2 greater, lesser or equal to the potential difference between the terminals of R1? (b) Is the current at resistor R2 higher, lower or equal to the current at resistor R1? (2) A fully charged capacitor C discharges through a resistor R (Figure 4). (a) After how many time constants its load drops to half of its initial value? (b) After how many time constants does the stored energy fall to half of its initial value?

3) - Analog Voltmeters and Ammeters work by measuring the torque, exerted by a magnetic field, on a current spira. The coil has a height of 2.1 cm and a width of 1.2 cm; it has 250 turns and is mounted so that it can rotate around its axis in a uniform magnetic field (B=0.23 T) A spring provides a resistant torque that balances the magnetic torque, resulting in an angular deflection in the balance, corresponding to a given constant current (i) in the coil. If a current of 100 ua produces an angular deflection of 28° (0.49 rad) what should be the torsional constant of the spring?