Topical test 5: Electromagnetic Induction FIGURE 5 l) (a) FIGURE 5 shows a bar moving on rails to the right with a velocity v in a uniform magnetic eld directed out of page. A resistor R connects the rails. (i) What is the direction of induced murent in resistor R? Explain your answer.(2m) (ii) State TWO ways to increase the induced current with R xed. (22:11) (h) A rectangular coil of 60 turns, dimension 0.1 tn X 0.] m and total resistance 10 Q, rotates with angular Speed 30 rad 5*labout the y-axis in a 1.5 T magnetic eld directed along the xaxis. Calculate the (i) maximum induced emf in the coil. (2111) (ii) maximum rate of change of magnetic ux through the coil. (2111) to) Two coaxial solenoids, P and Q have 400 and 1'00 turns respectively. A current of 3.5 A in coil P produces an average flux of 300 a Win through each turn of P and average flux of 90 p. M: through each turn of 0. Calculate the (i) inductance of solenoid P. (2:11) (ii) mutual inductance. (2m)