Ohm’s law for magnetic circuits is _________ – McqOptions

MCQOPTIONS

1.	Ohm’s law for magnetic circuits is _________
A.	F=ϕS
B.	F=ϕ/S
C.	F=ϕ²S
D.	F=ϕ/S²
Answer» B. F=ϕ/S

Discussion

No Comment Found

Related MCQs

A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2 H, then the self-induced EMF is:
All the Three inductors are perfeclty coupled as shown below, the value of total inductance (in Henry) across the terminal AB is
A coil is wound with 50 turns and a current of 8 A produces a flux of 200 μWb. Calculate the inductance of the coil.
Mutual inductance of the two magnetically coupled coils depends on
In the transformer circuit shown in the given figure, for maximum power transfer from source to load the turns ratio (primary to secondary) should be:
Determine the magnitude of induced EMF (in V) in a coil, it the current changes from +2 to -2A in 0.5 second and the coefficient of mutual induction is 0.5
Match the following lists in terms of Electrical and Magnetic circuits:List-I List-II(Magnetic circuits) (Electrical circuits)(a) \(\frac{N.i}{\phi }\)(i) \(\underset{m}{\mathop \sum }\,{{V}_{m}}\)(b) \(\underset{m}{\mathop \sum }\,{{N}_{m}}.{{i}_{m}}\)(ii) \(\underset{k}{\mathop \sum }\,{{i}_{k}}=0\)(c) \(\sum {{\phi }_{k}}=0\)(iii) \(\frac{1}{p}\)(d) μ(iv) \(\frac{V}{i}\)
For magnetically isolated coils, the value of coefficient of coupling is:
Find the mutual inductance between two ideally coupled coils of 2 H and 8 H.
If two identical inductors are magnetically coupled, the mutual inductance is 10 mH and the coefficient of coupling is 0.4. Find the self – inductance of the identical inductors.