NCERT - Physics Part-I
NCERT Physics Part 1 Solutions for Class 12th Chapter 4- Moving Charges and Magnetism is made available here for the benefit of students in order to help them in making their base strong. These NCERT Solutions are error-free and includes the entire syllabus of the exam which is prescribed by CBSE. Further, get all the answers to the questions which are asked in NCERT textbook of Class 12 in a well-structured way in these NCERT Solutions.
Get an insight into the important topics like Magnetic Force, Velocity Selector, Ampere’s Circuital Law, The Moving of Coil Galvanometer, The Solenoid, and the Toroid, etc. Clear your concepts related to Moving Charges and Magnetism, Magnetic Field, Direction of Circular Coil, Magnetic Force, etc. The stepwise and detailed answers to the questions surely help students in understanding the topics in a simple and interesting way.
A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?
A long straight wire carries a current of 35 A. What is the magnitude of the field B at a point 20 cm from the wire?
A long straight wire in the horizontal plane carries a current of 50 A in north to south direction. Give the magnitude and direction of B at a point 2.5 m east of the wire.
A horizontal overhead power line carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1.5 m below the line?
What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of 30° with the direction of a uniform magnetic field of 0.15 T?
A 3.0 cm wire carrying a current of 10 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27 T. What is the magnetic force on the wire?
Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are separated by a distance of 4.0 cm. Estimate the force on a 10 cm section of wire A.
A closely wound solenoid 80 cm long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 1.8 cm. If the current carried is 8.0 A, estimate the magnitude of B inside the solenoid near its centre.
A square coil of side 10 cm consists of 20 turns and carries a current of 12 A. The coil is suspended vertically and the normal to the plane of the coil makes an angle of 30° with the direction of a uniform horizontal magnetic field of magnitude 0.80 T. What is the magnitude of torque experienced by the coil?
Two moving coil meters, M1 and M2 have the following particulars:
R1 = 10Ω, N1 = 30,
A1 = 3.6 × 10–3 m2, B1 = 0.25 T
R2 = 14Ω, N2 = 42,
A2 = 1.8 × 10–3 m2, B2 = 0.50 T
(The spring constants are identical for the two meters).
Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M2 and M1.
|Chapter 1 - Electric Charges and Fields|
|Chapter 2 - Electrostatic Potential and Capacitance|
|Chapter 3 - Current Electricity|
|Chapter 4 - Moving Charges and Magnetism|
|Chapter 5 - Magnetism and Matter|
|Chapter 6 - Electromagnetic Induction|
|Chapter 7 - Alternating Current|
|Chapter 8 - Electromagnetic Waves|