ICSE Class 10 Moving Charges and Magnetism — Mock Test

Free online mock test for Moving Charges and Magnetism (ICSE Class 10 Physics) — 91 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.A 100 turn circular coil of radius 10 cm carries 3.2 A. Its magnetic moment is approximately:
   • A.10 A m^2
   • B.1.0 A m^2
   • C.100 A m^2
   • D.3.2 A m^2
2. 2.A tightly wound coil of 100 turns and radius 10 cm carries a current of 1 A. The magnetic field at the centre of the coil is (mu0 = 4 pi x 10^-7 T m/A):
   • A.3.14 x 10^-4 T
   • B.6.28 x 10^-4 T
   • C.6.28 x 10^-3 T
   • D.1.26 x 10^-3 T
3. 3.The force on a straight rod of length l carrying current I in a uniform external field B is:
   • A.I l x B
   • B.I B / l
   • C.I l . B
   • D.I^2 l B
4. 4.![helical_motion_field.png]() The figure shows the helical path of a positive charge q moving in a uniform magnetic field B. The total velocity v is resolved into two components labelled in the diagram. Which component is responsible for the circular part of the motion (the turning of the path)?
   • A.The component perpendicular to B (v perpendicular)
   • B.The component parallel to B (v parallel)
   • C.Both components equally
   • D.Neither component; the field itself supplies the turning
5. 5.Two long parallel wires 0.1 m apart each carry a current of 10 A in the same direction. The force per unit length between them is (mu0 = 4 pi x 10^-7 T m/A):
   • A.1 x 10^-4 N/m (attractive)
   • B.2 x 10^-4 N/m (attractive)
   • C.2 x 10^-4 N/m (repulsive)
   • D.4 x 10^-4 N/m (attractive)