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A 2-mH inductor can store a certain amount of energy when a currently flows through it....
2. A 33-mH inductor is directly connected to a varying current supply. a. During a “ramp...
2. A 33-mH inductor is directly connected to a varying current supply. a. During a “ramp up” period of 40. ms, the current through the inductor increases linearly from 0.50 to 1.00 A. What is the average emf induced across the inductor during this time period? A. 0.19 V D. 0.41 V B. 0.26 V E. 0.52 V C. 0.33 V b. The self-induced emf (across the inductor) will be... A. in the same direction as the current B. opposite...
answer all A circuit is constructed with four resistors, one inductor, one battery and a switch...
answer all
A circuit is constructed with four resistors, one inductor, one battery and a switch as shown. The values for the resistors are: R1-R2-56 Ω, R3-45 Ω and R4-91. The inductance is L-245 mH and the battery voltage is V- 24V 1) The switch has been open for a long time when at timet 0, the switch is closed. What is I1(0), the magnitude of the current through the resistor R1 just after the switch is closed? 2) What...
T2 A Ti 2 In time t, an amount of heat O flows through the solid...
T2 A Ti 2 In time t, an amount of heat O flows through the solid door of area A and thickness d represented above. The temperatures on each side of the door are T2 and Ti, respectively. What factors can be changed that would be certain to decrease O? 3.
A Capacitor is a circuit component that stores energy and can be charged when current flows...
A Capacitor is a circuit component that stores energy and can be charged when current flows through it. A current of 2A flows through a capacitor that has an initial charge of 2?C (micro Coulombs). After two microseconds, what is the magnitude of the net electric charge (in ?C) of the capacitor?
An initially installed flywheel can store 10 J of kinetic energy when rotating at 300 rad/s....
An initially installed flywheel can store 10 J of kinetic energy when rotating at 300 rad/s. It is replaced by another flywheel of the same size but made of a stronger material. If its mass is the same as that of the original, and it is now capable of achieving a rotational speed of 425 rad/s, what maximum energy can be stored? 2.01E+6J O 1.66E+3J O 1.73E+5 J O 1.00E+6J
1) An inductor of 45 mH that has a 2.6 mA current when connected to a...
1) An inductor of 45 mH that has a 2.6 mA current when connected to a circuit. There is a sinusoidal voltage of 12 V applied across the inductor. a) How much time does it take for this to happen? I 2) When resistors are connected in series, the equivalence resistances will be closest to the value of a) Smallest resistor value b) Middle resistor value c) Largest resistor value 3) An electro-magnetic wave of a moving charge will have...
PART A: The electrons in solids can be found ____________in only certain discrete sharp energy states...
PART A: The electrons in solids can be found ____________in only certain discrete sharp energy states associated with their orbits.in energy states that overlap so that more than one electron is associated with a given energy level.in the same energy states as if the atoms forming the solid were far enough so that their interactions could be neglected.in closely spaced energy levels that form a continuous distribution of energy within a certain range.PART B: When an electron in the valence...
6. A current of 3.5 pA flows through a copper wire. The diameter of the wire...
6. A current of 3.5 pA flows through a copper wire. The diameter of the wire is 30 mm. The number of charge carriers per unit volume is 1.7x10m. The electron drift speed is A) 4.6x1010 m/s B) 1.4x10 m/s C) 18x10 m/s D)5.7x10 m/s E) 1.4x10'm/'s 7· Three uniform cylindrical resistors are made of the same material and have the same length, but different diameters. They are connected in series as shown. We measure the voltage across point O...
Electric current passing through a human body can be dangerous, even fatal, depending on the amount...
Electric current passing through a human body can be dangerous, even fatal, depending on the amount of current, the duration of the current, and the region of the body through which the current passes. However, currents less than about 0.5 mA are typically imperceptible. A current caused by a low potential difference typically travels through the outer layer of the skin. The resistance of the skin therefore determines how much current flows for a given potential difference. The resistance can...
Sp 4 ised class. What is the maximum current through the inductor? 8. Where should an object be p...
question 9
Sp 4 ised class. What is the maximum current through the inductor? 8. Where should an object be placed relative to a thin lens with focal length 35 cm so that it's magnification is +4.5. What's the image position? Is it on the same side of the lens as the object? 9. A near sighted person has their far point at 4.80 meters. What is the power P (or focal length, 1/P) required to correct their near sightedness...
2. A 33-mH inductor is directly connected to a varying current supply. a. During a “ramp up” period of 40. ms, the current through the inductor increases linearly from 0.50 to 1.00 A. What is the average emf induced across the inductor during this time period? A. 0.19 V D. 0.41 V B. 0.26 V E. 0.52 V C. 0.33 V b. The self-induced emf (across the inductor) will be... A. in the same direction as the current B. opposite...
answer all
A circuit is constructed with four resistors, one inductor, one battery and a switch as shown. The values for the resistors are: R1-R2-56 Ω, R3-45 Ω and R4-91. The inductance is L-245 mH and the battery voltage is V- 24V 1) The switch has been open for a long time when at timet 0, the switch is closed. What is I1(0), the magnitude of the current through the resistor R1 just after the switch is closed? 2) What...
T2 A Ti 2 In time t, an amount of heat O flows through the solid door of area A and thickness d represented above. The temperatures on each side of the door are T2 and Ti, respectively. What factors can be changed that would be certain to decrease O? 3.
An initially installed flywheel can store 10 J of kinetic energy when rotating at 300 rad/s. It is replaced by another flywheel of the same size but made of a stronger material. If its mass is the same as that of the original, and it is now capable of achieving a rotational speed of 425 rad/s, what maximum energy can be stored? 2.01E+6J O 1.66E+3J O 1.73E+5 J O 1.00E+6J
1) An inductor of 45 mH that has a 2.6 mA current when connected to a circuit. There is a sinusoidal voltage of 12 V applied across the inductor. a) How much time does it take for this to happen? I 2) When resistors are connected in series, the equivalence resistances will be closest to the value of a) Smallest resistor value b) Middle resistor value c) Largest resistor value 3) An electro-magnetic wave of a moving charge will have...
6. A current of 3.5 pA flows through a copper wire. The diameter of the wire is 30 mm. The number of charge carriers per unit volume is 1.7x10m. The electron drift speed is A) 4.6x1010 m/s B) 1.4x10 m/s C) 18x10 m/s D)5.7x10 m/s E) 1.4x10'm/'s 7· Three uniform cylindrical resistors are made of the same material and have the same length, but different diameters. They are connected in series as shown. We measure the voltage across point O...
Electric current passing through a human body can be dangerous, even fatal, depending on the amount of current, the duration of the current, and the region of the body through which the current passes. However, currents less than about 0.5 mA are typically imperceptible. A current caused by a low potential difference typically travels through the outer layer of the skin. The resistance of the skin therefore determines how much current flows for a given potential difference. The resistance can...
question 9
Sp 4 ised class. What is the maximum current through the inductor? 8. Where should an object be placed relative to a thin lens with focal length 35 cm so that it's magnification is +4.5. What's the image position? Is it on the same side of the lens as the object? 9. A near sighted person has their far point at 4.80 meters. What is the power P (or focal length, 1/P) required to correct their near sightedness...
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