(i) magnetic flux of the loop at t = 2.0 s. (ii) magnitude of the emf produced in the loop at t= 2.0 s.

The figure shows a triangular loop of wire in a uniform magnetic field. (Figure 1) If the field strength changes from 0.50 to 0.15 TT in 50 msms , what is the induced emf in the loop? A) 0.14 VV B) 0.21 VV C) 0.28 VV D) 0.42 VV E) 0.63 VV

Question 3: Induction (a) The accompanying figure shows a single-turn rectangular coil that has a resistance of 2.0/2. The magnetic field at all points inside the coil varies according to B = Boe-at, where Bo = 0.25T and a = 200Hz. What is the current induced in the coil at (a) t = 0.001s, (b) 0.002 s, (c) 2.0 s? x x x x x X X 5.0 cm X x x X x x X X x B x 2.0 cm X (b) How would the answers to the preceding problem change if the coil consisted of 20 closely spaced turns? Note that the resistance would increase by 2.00 per coil as well.

The earth’s magnetic field points toward(magnetic) north. For simplicity, assume that the field has no vertical component (as is the case nearthe earth’s equator). How should you hold it to get zero emf as you walk toward the east? (i) East-west; (ii) north-south; (iii) up-down; (iv) none of these.

2. A flat, circular coil has radius 10.0 cm and 200 turns. It is immersed in a uniform magnetic field that makes an angle of 60.0 degrees with the plane of the coil as shown below. The magnetic field is increasing with time at a rate of 12.0 T/s. What is the magnitude of the emf induced in the coil (in V)? (A) 65.3 (B) 100 (C) 133 (D) 76.8 (E) 49.8 (F) 30.0 unour em to the

The magnetic flux through a 898-turn coil depends on time according to ® (1) = Tm2 4x 10-3. s2 12, in which the time is in seconds. Calculate the absolute value of the emf induced at time t = 3.96 s, in volts.