Major Competitive Exams
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Q. A circular loop of wire carries a current. What is the shape of the magnetic field lines inside the loop?
Q. A circular loop of wire carries a current. What is the shape of the magnetic field lines around the loop? (2021)
Q. A circular loop of wire carrying current produces a magnetic field. What is the shape of the magnetic field lines? (2020)
Q. A circular loop of wire carrying current produces a magnetic field. What is the shape of the magnetic field lines inside the loop? (2020)
Q. A circular loop of wire is placed in a uniform magnetic field. If the magnetic field is increased, what happens to the induced EMF in the loop?
Q. A circular loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the magnetic field strength is doubled?
Q. A circular loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the area of the loop is increased?
Q. A class has 30 students with an average score of 75. If 5 new students join with an average score of 80, what is the new average? (2023)
Q. A class has 30 students with an average score of 75. If a new student joins and the average becomes 76, what is the score of the new student? (2023)
Q. A class has 30 students, and 40% of them are girls. How many boys are there in the class? (2023)
Q. A class has an average score of 65. If a new student with a score of 85 joins, how does the average change if the class size increases by one?
Q. A class has an average score of 75. If one student scored 90, what is the average score of the remaining students if there are 20 students in total?
Q. A class has the following scores in a test: 56, 78, 78, 82, 82, 82, 90, 91. What is the mode of the scores?
Q. A class of 30 students has an average score of 75. If one student scores 90, what will be the new average? (2022)
Q. A class of students scored the following marks: 45, 50, 50, 55, 60, 60, 60, 70, 75. What is the mode of the scores?
Q. A class of students scored the following marks: 45, 55, 55, 60, 60, 60, 70, 75, 80. What is the mode of the scores?
Q. A class of students scored the following marks: 45, 55, 55, 60, 60, 60, 70, 75. What is the mode of the scores?
Q. A class of students scored the following marks: 45, 55, 55, 60, 70, 70, 70, 80, 90. What is the mode of the scores?
Q. A clock shows 3:15. What is the angle between the hour and the minute hand? (2023)
Q. A coil has an inductance of 0.5 H and is connected to a 50 Hz AC supply. What is the inductive reactance? (2020)
Q. A coil of wire has 100 turns and is placed in a magnetic field of strength 0.5 T. If the area of the coil is 0.1 m², what is the maximum magnetic flux through the coil? (2022)
Q. A coil of wire has 100 turns and is placed in a magnetic field of strength 0.5 T. If the area of the coil is 0.1 m² and the magnetic field is perpendicular to the coil, what is the magnetic flux through the coil? (2022)
Q. A coil of wire is placed in a changing magnetic field. What happens to the induced current if the resistance of the coil is increased?
Q. A coil of wire is placed in a changing magnetic field. What phenomenon is observed?
Q. A coil of wire is placed in a magnetic field. If the magnetic field strength is doubled, what happens to the induced EMF?
Q. A coil of wire is placed in a magnetic field. If the magnetic field strength is increased, what happens to the induced EMF in the coil?
Q. A coil of wire is placed in a magnetic field. If the magnetic field strength is increased, what happens to the induced EMF?
Q. A coil with 100 turns and an area of 0.01 m² is placed in a magnetic field of 0.5 T. What is the magnetic flux through the coil?
Q. A coil with 100 turns has a magnetic flux of 0.02 Wb passing through it. If the flux changes to 0.01 Wb in 2 seconds, what is the induced EMF? (2022)
Q. A coil with 100 turns is placed in a magnetic field that changes at a rate of 0.5 T/s. What is the induced EMF in the coil?
