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Electric Circuits
two similar cells A and B are connected in series with a coil of resistance 9.8ohm. A voltmeter of very high resistance connected to the terminals of A reads 0.98 volt and when connected to the terminals of B it reads 1.0 volt.Find the internal resistance of each cell having emf 1.08
Electric Circuits
A uniform electric field of 200 N/C is in the x-direction. A point charge of 3μC is released from rest at the origin. What is the kinetic energy of the charge when it is at x = 4 m?
Electric Circuits
A 4.0 m long wire has diameter of 0.30 mm. If its resistance is 30 ohm, find it's specific resistance
Electric Circuits
One plate of the capacitor has positive charge "q" on it, The other plate of capacitor is earthed, what is the charge on it
Electric Circuits
Two equally charged particles are held 3.2 103 m apart and then released from rest. The initial acceleration of the first particle is observed to be 7.0 m/s2 and that of the second to be 9.0 m/s2. If the mass of the first particle is 6.3 107 kg, what are
(a) the mass of the second particle
(b) the magnitude of the charge of each particle?
(a) the mass of the second particle
(b) the magnitude of the charge of each particle?
Electric Circuits
In the universal biasing of a transistor which resistor acts as feedback element ? How does it provide stability to the circuit?
Electric Circuits
Explain the statement "Transistor is a current controlled device while FET is a voltage controlled device ."
Electric Circuits
Design and draw a zener voltage regulator to provide 5V output if load resistance varies between 100 ohm and 500 ohm. Assume that the input unregulated dc voltage is 6V .
Electric Circuits
Why LC oscillations are prefered over RC oscillators to generate high frequencies ? Why 2-stage amplifire is required in wein bridge oscillator in contrast to a single stage amplifier in the phase shift oscillator ?
Electric Circuits
Explain how class B amplifier is more efficient than class A amplifier . What will be the effect on the output of a push-pull amplifier if unmatched transistors are used ?
