Two coils X of 1000 turns and Y of 2000 turns are placed such that 60% of the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 mWb flux. The mutual inductance between the coils is

According to Kirchhoff’s voltage law, the algebraic sum of all IR drops and e.m.f. in any closed loop of a network is always

A. Negative

B. Positive

C. Determined by battery e.m.f.

D. Zero

The number of independent equations to solve a network is equal to

A. The number of chords

B. The number of branches

C. Sum of the number of branches and chords

D. Sum of number of branches, chords and nodes

A closed path made by several branches of the network is known as

A. Branch

B. Loop

C. Circuit

D. Junction

Which of the following is not a nonlinear element ?

A. Gas diode

B. Heater coil

C. Tunnel diode

D. Electric arc