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"In a magnetic field of 2.50 × 10-3 T, if magnetic force is equal to proton's weight, then the proton moves with the speed of" Multiple Choice Questions (MCQ) on electromagnetism with choices 3.09 × 10-5 m s-1, 4.09 × 10-5 m s-1, 2.09 × 10-5 m s-1, and 0.09 × 10-5 m s-1 for SAT test prep classes. Practice merit scholarships assessment test, online learning electromagnetism quiz questions for competitive exams in physics majors for completely online college. Electromagnetism Video

MCQ: In a magnetic field of 2.50 × 10-3 T, if magnetic force is equal to proton's weight, then the proton moves with the speed of

1. 3.09 × 10-5 m s-1
2. 4.09 × 10-5 m s-1
3. 2.09 × 10-5 m s-1
4. 0.09 × 10-5 m s-1

B

MCQ: Value of magnetic field that will cause a max force of 7 × 10-3N on a 20 cm wire carrying current of 10 A will be

1. 3.5 × 10-3 T
2. 1.5 × 10-3 T
3. 4.5 × 10-3 T
4. 2.5 × 10-3 T

A

MCQ: Torque of the couple is given by ILB × a, in which a is a/an

1. momentum
2. moment arm
3. arm
4. moment of inertia

B

MCQ: Product of force and moment arm is known as

1. potential difference
2. voltage
3. torque
4. inertia

C

MCQ: A power line 10 m high carries current 200 A, the magnetic field will be

1. 2 × 106 T
2. 3 × 106 T
3. 4 × 106 T
4. 5 × 106 T

C