If the self inductance of 500 turn coil is 125 mH, then the self inductance
If the self inductance of 500 turn coil is 125 mH, then the self inductance of similar coil of 800…
8 years ago
Physics
The flux linked with a circuit is given by φ=t³+3t-7. The graph between time
The flux linked with a circuit is given by φ=t³+3t-7. The graph between time (x-axis) and induced emf (y-axis) will…
8 years ago
Two coaxial solenoids are made by winding thin insulated wire over a pipe
Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area A=10 cm² and length…
8 years ago
Which wavelengths of sun is used finally as electric energy?
Which wavelengths of sun is used finally as electric energy? Options (a) Radio waves (b) Infra red waves (c) Visible…
8 years ago
The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected
The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected to its…
8 years ago
A transistor-oscillator using a resonant circuit with an inductor L
A transistor-oscillator using a resonant circuit with an inductor L (of negligible resisitance) and a capacitor C in series produce…
8 years ago
The core of a transformer is laminated because
The core of a transformer is laminated because Options (a) ratio of voltage in primary and secondary may be increased…
8 years ago
The current through an inductor changes from 3 A to 2 A is 1 m/s. If induced e.m.f.
The current through an inductor changes from 3 A to 2 A is 1 m/s. If induced e.m.f. in inductor…
8 years ago
Which of the following is the function of the step-up transformer?
Which of the following is the function of the step-up transformer? Options (a) Low voltage, high current to high voltage…
8 years ago
In an inductor when current changes from 2 A to 18 A in 0.05 sec, the e.m.f. induced
In an inductor when current changes from 2 A to 18 A in 0.05 sec, the e.m.f. induced is 20…
8 years ago