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Magazine Problem 16
Pair up the following phrases so that they correctly relate the type of magnetic force to the type of current: attractive force, repulsive force, samedirection currents, opposite-direction currents.
Problem 17
Determine If you halve the number of loops in a solenoid while doubling its length, does the magnetic field increase, decrease, or stay the same? Explain.
Problem 17
If you halve the number of loops in a solenoid while doubling its length, does the magnetic field increase, decrease, or stay the same? Explain.
Problem 19
Find the magnetic field \(6.25 \mathrm{~cm}\) from a long, straight wire that carries a current of \(5.81 \mathrm{~A}\).
Problem 19
Calculate Find the magnetic field \(6.25 \mathrm{~cm}\) from a long, straight wire that carries a current of \(5.81 \mathrm{~A}\).
Problem 20
Calculate A wire carries a current of \(4.2 \mathrm{~A}\). At what distance from the wire does the magnetic field have a magnitude of \(1.3 \times 10^{-5} \mathrm{~T}\) ?
Problem 20
A wire carries a current of \(4.2 \mathrm{~A}\). At what distance from the wire does the magnetic field have a magnitude of \(1.3 \times 10^{-5} \mathrm{~T}\) ?
Problem 21
Calculate The magnetic field in a solenoid that has 250 loops and a length of \(12 \mathrm{~cm}\) is \(9.4 \times 10^{-5} \mathrm{~T}\). What is the current in the solenoid?
Problem 21
The magnetic field in a solenoid that has 250 loops and a length of \(12 \mathrm{~cm}\) is \(9.4 \times 10^{-5} \mathrm{~T}\). What is the current in the solenoid?
Problem 22
The current in a superconducting solenoid is \(3.75 \mathrm{kA}\). If the number of loops per meter in this solenoid is 3250 , what is the magnitude of the magnetic field it produces?
