Electromagnetic Induction
A circular coil of radius $$2.00cm$$ has $$50$$ turns. A uniform magnetic field $$B=0.200T$$ exists in the space in a direction parallel to the axis of the loop. The coil is now rotated about a diameter through an angle of $${60.0}^{o}$$. The operation takes $$0.100s$$. (a) Find the average emf induced in the coil. (b) If the coil is a closed one (With the two ends joined together) and has a resistance of $$4.00\Omega$$. Calculate the net charge crossing a cross-section of the wire of the coil.
Electromagnetic Induction
If a current of $$3$$ amp flowing in the primary coil is reduced to zero in $$0.01$$ second then the induced emf in the secondary coil is $$1500$$ volts, the mutual inductance between the two coils is:
Electromagnetic Induction
For two coils with number of turns $$500$$ and $$200$$ each of length $$1\ m$$ and cross-sectional area $$4\times 10^{-4}m^{2}$$, the mutual inductance is:
Electromagnetic Induction
The sum and the difference of self inductances of two coils are $$13\ H$$ and $$5\ H$$ respectively. The maximum mutual inductances of two coil is
Electromagnetic Induction
Two coils are placed close to each other. The mutual inductance of the pair of coils depend upon :
Electromagnetic Induction
A system $$S$$ consists of two coils $$A$$ and $$B$$. The coil $$A$$ have a steady current $$I$$ while the coils $$B$$ is suspended near by as shown in figure. Now the system is heated as to raise the temperature of two coils steadily, then :
Electromagnetic Induction
An inductor of inductance $$100\ mH$$ is connected in series with a resistance, a variable capacitance and an AC source of frequency $$2.0\ kHz$$; The value of the capacitance so that maximum current may be drawn into the circuit.
Electromagnetic Induction
Determine the mutual inductance of a doughnut coil and an infinite straight wire passing along its axis. The coil has a rectangular cross-section, its inside radius is equal to $$a$$ and the outside one, to $$b$$. The length of the doughnut's cross-sectional side parallel to the wire is equal to $$h$$. The coil has $$N$$ turns. The system is located in a uniform magnetic with permeability $$\mu$$.
Electromagnetic Induction
There are two stationary loops with mutual inductance $$L_{12}$$. The current in one of the loops starts to be varied as $$I_{1} = \alpha t$$, where $$\alpha$$ is a constant, $$t$$ is time. Find the time dependence $$I_{2}(t)$$ of the current in the other loop whose inductance is $$L_{2}$$ and resistance $$R$$.
Electromagnetic Induction
Two identical coils, each of inductance $$L$$, are interconnected (a) in series, (b) in parallel. Assuming the mutual inductance of the coils to be negligible, find the inductance of the system in both cases.
