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Applied physics practice test MCQ: a 20 cm wire carrying current of 10 a with magnetic field 0.30 t having angle 40° will produce force of with choices 0.21 n, 0.25 n, 0.31 n and 0.39 n for summative assessment, summative assessment of jobs' seekers and students with online jobs and courses' tests. Free study guide is for online learning magnetic flux density quiz with MCQs to practice test questions with answers. Magnetic Flux Density Video

MCQ: A 20 cm wire carrying current of 10 A with magnetic field 0.30 T having angle 40° will produce force of

1. 0.21 N
2. 0.25 N
3. 0.31 N
4. 0.39 N

D

MCQ: If magnetic field in region is given by B = 4i + 8k, then flux passing through a 5 m² area loop will be

1. 20i + 40k Wb
2. 20 Wb
3. 40 Wb
4. 30 Wb

C

MCQ: According to SI units, unit of magnetic flux is

1. tesla
2. N m A-1
3. weber
4. N C-1

C

MCQ: If magnetic field in certain region is given by B = (40i-18k)Wb m², then flux passing through 5 cm² area loop will be

1. 90 × 10-4
2. 91 × 10-4
3. 92 × 10-4
4. 94 × 10-4

A