Practice magnetic, electric and gravitational fields MCQs, A level physics MCQ test for online learning. As level physics quiz has multiple choice questions (MCQ), magnetic, electric and gravitational fields quiz questions and answers to practice as gravitational potential is always, answer key help with choices as positive, negative, zero and infinity problem solving for viva, competitive exam preparation, interview questions. Free study guide is for online learning magnetic, electric and gravitational fields quiz with MCQs to practice test questions with answers.

MCQ. Gravitational potential is always

1. positive
2. negative
3. zero
4. infinity

B

MCQ. For a hydrogen atom the electrical force as compared to gravitational force is

1. 1039 times
2. 1040 times
3. 1041 times
4. 1042 times

A

MCQ. Weakest force in nature is

1. electric force
2. gravitational force
3. weak force
4. magnetic force

B

MCQ. Force per meter on two wires carrying a current of 1 A placed 1 m apart is equal to

1. 6.7 × 10-11 N
2. 9.0 × 109 N
3. 2.0 × 10-7 N
4. 3.0 × 10-4 N

C

MCQ. Origin of gravitational field is

1. charges
2. masses
3. Earth's core
4. matter

B