Question

Question no-4- 6r+9 from 8r-4​

Answer 1

Step-by-step explanation:

Induction is the magnetic field which is proportional to the rate of change of the magnetic field. ... 1 Henry is defined as the amount of inductance required to produce an emf of 1 volt in a conductor when the current change in the conductor is at the rate of 1 Ampere per second.

Answer 2

do you want to subtract it

then the answer is 2r-5