Energy in a current carrying coil is stored in the form of
Energy in a current carrying coil is stored in the form of Options (a) electrical energy (b) magnetic field (c)…
8 years ago
Physics
In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency
In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance…
8 years ago
The material suitable for making electromagnets should have
The material suitable for making electromagnets should have Options (a) High retentivity and high coercivity (b) Low retentivity and low…
8 years ago
Radiofrequency choke uses core of
Radiofrequency choke uses core of Options (a) Air (b) Iron (c) Air and iron (d) None of these Correct Answer:…
8 years ago
The magnetic flux linked with a circuit of resistance 100Ω increases from 10 to 60 Wb.
The magnetic flux linked with a circuit of resistance 100Ω increases from 10 to 60 Wb. The amount of induced…
8 years ago
The coefficient of mutual inductance of two coils is 6 mH. If the current flowing
The coefficient of mutual inductance of two coils is 6 mH. If the current flowing in one is 2A, the…
8 years ago
In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V
In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V are produced.…
8 years ago
An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF.
An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF. The resonant frequency of…
8 years ago
The self induced e.m.f. in a 0.1 H coil when the current in it is changing
The self induced e.m.f. in a 0.1 H coil when the current in it is changing at the rate of…
8 years ago
Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced in one circuit when the current…
8 years ago