Title 06. ELECTROMAGNETIC INDUCTION(H).pdf ✅

NEET REVISION 06. ELECTROMAGNETIC INDUCTION(H) NEET REVISION Date: March 18, 2025 Dura on: 1:00:00 Total Marks: 180 INSTRUCTIONS INSTRUCTIONS PHYSICS 1. Find the mutual inductance in the arrangement, when a small circular loop of wire of radius ' ' is placed inside a large square loop of wire of side . The loops are coplanar and their centres coincide [Q358525] (1) (2) (3) (4) 2. A metallic rod of length ' ' is tied to a string of length and made to rotate with angular speed on a horizontal table with one end of the string fixed . If there is a vertical magnetic field ' ' in the region, the e.m.f. induced across the ends of the rod is : [Q358444] (1) (2) (3) (4) 3. Wire with negligible resistance slides on the three rails with . If the current in resistance when switch is connected to posi‐ tion 1 is and when the switch is at position 2 the current becomes . Find the ratio . [Q358483] (1) 0.5 (2) 0.9 (3) 0.3 (4) 0.7 4. The graph shows the variation in magnetic flux with time through a coil. Which of the state‐ ment given below is not correct? [Q358635] (1) There is a change in the direction as well as magnitude of induced emf between and (2) The magnitude of the induced emf is maximum between and (3) There is a change in the direction as well as magnitude of induced emf between and (4) The induced emf is not zero at 5. If a resistance less rod is moving with constant velocity in a constant magnetic field. Then di‐ rection of current and in resistance and respectively is : [Q358678] (1) clockwise, Anticlockwise (2) Anticlockwise, Clockwise (3) and both clockwise (4) and both Anticlockwise R L(L >> R) M = 2√2μ0R 2 L M = √2μ0R 2 L M = √2μ0R L2 M = 2√2μ0R L2 l 2l ω B 2Bωl 2 2 3Bωl 2 2 4Bωl 2 2 5Bωl 2 2 PQ 5 cm/sec 10 Ω S i1 i2 i1 i2 φ(t) A D B C B D B v I1 I2 R1 R2 I1 → I2 → I1 → I2 → I1 I2 I1 I2