28. Magnetic Fields and Forces
Force and Torque on Current Loops
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- Multiple ChoiceA square loop of wire has a side length of and carries a current. What is the size of its magnetic dipole moment?428views1rank
- Multiple ChoiceA single circular loop of wire has a radius of , and carries a current of . What is the maximum torque that could be experienced by this loop due to earth's magnetic field?413views
- Textbook Questionb. What is the loop's equilibrium orientation?105views
- Textbook Question
A rectangular loop of wire carries a 2.0-A dc current and lies in a plane which also contains a very long straight wire carrying a 10.0-A current as shown in Fig. 28–58. Determine (a) the net force and (b) the net torque on the loop due to the straight wire.
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202views - Textbook Question
(II) An iron atom has a magnetic dipole moment of about 1.8 x 10⁻²³ A • m² . (a) Determine the dipole moment of an iron bar 15 cm long, 1.2 cm wide, and 1.0 cm thick, if it is 100 percent saturated. (b) What torque would be exerted on this bar when placed in a 0.80-T field acting at right angles to the bar?
212views - Textbook Question
A motor run by a 9.0-V battery has a 20-turn square coil with sides of length 5.0 cm and total resistance 24 Ω . When spinning, the magnetic field felt by the wire in the coil is 0.020 T. What is the maximum torque on the motor?
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