Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies with time t (in sec)…
8 years ago
Physics
A very small circular loop of radius a is initially (at t=0) coplanar and concentric
A very small circular loop of radius a is initially (at t=0) coplanar and concentric with a much larger fixed…
8 years ago
Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec. Given L=10 µH.…
8 years ago
The initial rate of increase of current, when a battery of emf 6 V is connected
The initial rate of increase of current, when a battery of emf 6 V is connected in series with an…
8 years ago
Large transformers, when used for some time, become hot and are cooled by circulating
Large transformers, when used for some time, become hot and are cooled by circulating oil. The heating of transformer is…
8 years ago
The identical loops of copper and aluminium are moving with the same speed
The identical loops of copper and aluminium are moving with the same speed in a magnetic field. Which of the…
8 years ago
Changing magnetic fields can set up current loops in nearby metal bodies
Changing magnetic fields can set up current loops in nearby metal bodies and the currents are called as Options (a)…
8 years ago
The phase difference between the flux linked with a coil rotating in a uniform
The phase difference between the flux linked with a coil rotating in a uniform magnetic field and induced emf produced…
8 years ago
The self-inductance of a coil having 500 turns is 50mH. The magnetic flux
The self-inductance of a coil having 500 turns is 50mH. The magnetic flux through the cross-sectional area of the coil…
8 years ago
For high frequency a capacity offers
For high frequency a capacity offers Options (a) Less reactance (b) More reactance (c) Zero reactance (d) Infinite reactance Correct…
8 years ago