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Moving Charges And Magnetism

Question

Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why?

Solution

Toroid is a circular ring having no ends. Hence, the magnetic field lines form continuous loops and there is no flux leakage. But, in a straight solenoid there is a leakage of flux across the ends.

Some More Questions From Moving Charges And Magnetism Chapter

Two moving coil meters, M₁ and M₂ have the following particulars:
R₁ = 10 Ω N₁ = 30,
A₁ = 3.6 x 10^–3 m², B₁ = 0.25 T
R₂ = 14 Ω; N₂ = 42,
A₂ = 1.8 x 10^–3 m², B₂ = 0.50 T
(The spring constants k are identical for the two meters).
Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M₂ and M_1.

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Moving Charges And Magnetism

Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why?

Some More Questions From Moving Charges And Magnetism Chapter

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