A 9ohm resistor is connected to a solenoid and a power source of 10V. The solenoid has a radius of 15cm, 200 loops, and a length of 2cm. If we assume the circuit starts with no current, what is the stored energy in solenoid after 0.5 seconds?
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- 3. A solenoid has radius 5.80 mm, length 11.0 cm, 5000 turns, and is placed with its axis of symmetryalong the x-axis, through the origin. A vector normal to the opening of the solenoid points to the right.We measure the resistance of the solenoid to be 14.0 Ω. The solenoid is in a region where thetemperature is 49.0°C and initially, there is an external magnetic field of 0.30 T in the +x direction.Then the magnetic field is turned off and drops to 0 T over 50.0 milliseconds.a. What is the magnitude of the average induced emf during the 50.0 milliseconds while the magneticfield magnitude decreases to 0?________________________b. What is the direction of the induced current, as viewed from the right? Answer clockwise,counterclockwise, or zero and show work or explain in words.________________________c. What is the magnitude of the induced current? ________________________d. What is the magnitude and direction of the induced magnetic field?A solenoid having an inductance of 8.53 μH is connected in series with a 1.72 kΩ resistor. (a) If a 20.0 V battery is connected across the pair, how long will it take in seconds for the current through the resistor to reach 89.8% of its final value? (b) What is the current through the resistor at a time t = 1.00τL?The closed circuit shown below (same as #1) has a resistor of 5 Ω, an inductor of 6 mH, and a battery with 12 V. What is the current 2s after the switch 1 is closed? 0 A 1.95 A 2.4 A 4.12 A
- A 3.5 mH inductor and a 4.5 mH inductor are connected in series and a time varying current is established in them. When the total emf of the combination is 16 V, what is the emf of the larger inductor?A solenoid having an inductance of 6.92 μH is connected in series with a 1.57 kΩ resistor. (a) If a 16.0 V battery is connected across the pair, how long will it take in seconds for the current through the resistor to reach 83.8% of its final value? (b) What is the current through the resistor at a time t = 1.00τL?A loop of wire has a self-inductance of 5.5 mH. You pass a current of 9.0 Amps though the loop, and then drop the current to 0 at a contastant rate over 3.5 seconds. What is the EMF generated?
- A solenoid has an inductance of 6 mH. If the current through the solenoid is increased at the rate of 5 A/s, what will be the self-induced emf?In the circuit shown in the figure, let L = 7.40 H, R = 5.90 ohms and E = 120 V. What is the self induced emf 0.200 s after the switch is closed?You need an inductor that will store 20 J of energy when a 3.0-A current flows through it. What should be its self-inductance? O 3.7 H O 90 H O 60 H O 4.4 H O 76 H
- How many turns of wire would be required to make a 150 mH inductance out of a 20.0 cm-long air-filled coil with a diameter of 4.8 cm?As shown below, a wire loop with a radius of 0.84 m is immersed in a B-field (the direction of the field is shown in the diagram). The B-field decreases from 10 T to 6 T and as a result a 8 V voltage & a 8.1 A current are induced. Determine how long the B-field was changing & the loop's resistance. At = the loop's resistance = ΩA solenoid with 465 turns has a length of 7.50 cm and a cross sectional area of 2.70×10^-9 m^2. Find the solenoids inductance and the average emf aroumd the solenoid if the current changes from +2.50 A to -2.50 A in 5.33×10^-3 s.