Magnetic field lines inside a solenoid Aare parallel to each other. Bare convergent. Care divergent. DNone of the aboveSubmit What is the direction of magnetic field lines outside a bar-magnet? View Solution What is the direction of magnetic field lines outside a bar-magnet? View Solution...
In a magnetic field, a compass needle always points in the direction of ___. A. the north pole of the magnet B. the south pole of the magnet C. east D. west 相关知识点: 试题来源: 解析 A。指南针在磁场中总是指向磁体的北极。选项 B 是磁体的南极,指南针指向的是北极;选项 C 和 D ...
PROBLEM TO BE SOLVED: To provide a magnetic circuit of permanent magnet for generating a magnetic field in the axial direction which has a necessary and sufficient length by preventing reverse of the magnetic field in the axial direction inside a cavity. SOLUTION: A cylindrical magnetic material ...
The flow of current determines the direction of the magnetic field of the magnet bar. When the electric current flows in the straight wire, the...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your...
As shown in Fig. 4, the magnet moves towards the ring coil, and tries to judge the induced current direction of the ring coil. According to the "principle of action and reaction" (Lenz's law is an expression of "principle of action and reaction" in magnetic field, when using the princ...
THE determination of the direction of the resultant force, at any point, due to a long, thin magnet, is of some importance as a laboratory exercise, and it is necessary to be able to compare the direction which a small needle takes up in its field with the theoretical direction. For ...
Calculate the magnetic field inside a solenoid with 223 turns per meter, with a 2.1 A current flowing. A circular loop of wire with a radius of 2.00m is in a region where there is a uniform magnetic field B. The B field is increasing by 0.40T each second. Find the m...
magnetic force(iv)The shape of the Earth's magnetic field is as though there were a bar magnet at the centre of the Earth, aligned approximately on the North-South axis.If the plane flies west to east, but above the equator, the wing tips do not become charged.Explain why.(Magnetic) ...
Magnets should be stored in a dry and constant temperature environment as far as possible. How to achieve magnetic isolation? Only the material that can be adsorbed on the magnet can play the role of isolating the magnetic field, and the thicker the material, the better the magnetic isolation...
A short bar magnet has a magnetic moment of 0.65JT−1, then the magnitude and direction of the magnetic field produced by the magnet at a distance 8 cm from the centre of magnet on the axis is A2.5×10−4T, along NS direction B2.5×10−4T,along SN direction C4.5×10−4T,...