Embibe Experts Solutions for Chapter: Electromagnetic Induction, Exercise 12: Exercise (Assertion & Reason)

An e.m.f. of $15$ $\mathrm{V}$ is applied in a circuit containing $5 \mathrm{H}$ inductance and $10 \mathrm{\Omega }$ resistance. The ratio of the currents at time $t\to \infty$ and at $t=1 \sec$  is:

The equivalent inductance of two inductances is $2.4 \mathrm{H}$ when connected in parallel and $10 \mathrm{H}$ when connected in series. The difference between the two inductances is

When two co-axial coils having same current in same direction are brought to each other, then the value of current in both coils :

A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure. The time variation of the magnitude of e.m.f. generated across the coil during one cycle is :-

Assertion : In L-R circuit, if higher value of L is taken then it will take more time to reach steady state value of current.
Reason : For higher value of L, back emf is larger. 

Assertion : MRI is an excellent method to find problem in internal tissues.  
Reason : Two third of the human body is made up of hydrogen which has one electron.

Assertion : In an R-L circuit if current is increasing then inductor behave as a conducting wire. 
Reason : In steady state, current in L-R circuit is dependent on L. 

Assertion :- During discharging there is magnetic field between plates of capacitor.
Reason :- Time varying electric field produces magnetic field.