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Answer the following questions:
(a) In any ac circuit, is the applied instantaneous voltage equal to the algebraic sum of the instantaneous voltages across the series elements of the circuit? Is the same true for rms voltage?
(b) A capacitor is used in the primary circuit of an induction coil.
(c) An applied voltage signal consists of a superposition of a dc voltage and an ac voltage of high frequency. The circuit consists of an inductor and a capacitor in series. Show that the dc signal will appear across C and the ac signal across L.
(d) A choke coil in series with a lamp is connected to a dc line. The lamp is seen to shine brightly. Insertion of an iron core in the choke causes no change in the lamp's brightness. Predict the corresponding observations if the connection is to an ac line.
(e) Why is choke coil needed in the use of fluorescent tubes with ac mains? Why can we not use an ordinary resistor instead of the choke coil?
An airplane flies 422 km in a straight line at an angle of 73.0 degrees south of east. Find the resultant displacement of the airplane for the entire trip
A toroidal solenoid has a mean radius of 10.0cm and a cross-sectional area of 4.8cm2 and is wound uniformly with 115 turns. What is the mutual inductance of these coils
This problem introduces the concept of tension. The instance is a rope, oriented vertically, that is being pulled from both ends. Let and (with u for up and d for down) represent the magnitude of the forces acting on the top and bottom of the rope..
the microwave radiation left over from the big bang explosion of the universe has an average energy density of 3.95
The force component along the displacement varies with the magnitude of the displacement, Find the work done by the force in the interval
A dog on a merry-go-round undergoes a 1.2 m/s2 linearacceleration. If the merry-go-round's angular acceleration is .63rad/s2, how far is the dog from the axis of rotation?
A 30 g ball of clay is thrown horizontally at 20 m/s toward a 1.7 kg block sitting at rest on a frictionless hi surface. The clayts and sticks to the block. What is the speed of the block and clay right after the collision?
Water flows over a section of Niagara Falls at a rate of 1.07 × 106 kg/s and falls 40 m, How many 70 W bulbs can be lite with this power
an other frame moves with a speed of 0.85 relative to the home frame. an object at rest in the home frame has a length
two points charges of 20.0 uc and -8.00 uc are separated by the distance of 20.0 cm. what is the magnitude of electric
a laser beam is reflected by a plane mirror. it is observed that the angle between the incident and reflected beams is
A model airplane of mass 0.870 kg is flying at constant speed in a horizontal circle at one end of a 28.0 m cord and at a height of 17.0 m. What is the acceleration of the plane
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