An ideal transformer steps down a voltage of 240V to supply power to a lamp with a power rating 3V, 0.3A. If the brightness of the lamp is normal, the current flowing in the primary coil is ( *10^3 A. Your answer should be in three significant figures and proper scientific notation (as given). Blank 1:
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- 60.0 W of power is applied to the primary coil of a transformer. What is the current induced in the secondary coil if the number of windings in the primary coil is 10 times the number of windings in a secondary coil and the voltage in the secondary coil is 12.0V? What is the voltage across the primary coil? Show the algebraic form of any equation(s) that apply. Report your answers to the correct number of significant figures and with correct units.QUESTION 7 Refer to the figure in the previous question. What is the emf induced when a 5.48-cm conducting rod attached to a U-shaped conductor moves at 1.56 m/s perpendicular to a magnetic field of strength 14.9 T? Please write the numeric answer in terms of V (volts). Normal format with 3 SF.A step-down transformer has 5,000 turns in its primary winding and is connected to a 240-Volts AC line. It runs a device that runs on a current of 20.0 Amperes at 6.0 Volts. What current flows through the primary winding? Find the number of turns in the secondary winding?
- A transformer has exactly 600 turns on its primary and exactly 200 turns on its secondary. If a voltage of 100.0v is applied to the primary of a 0.250 A flows through the primary windings, then what is the voltage output of the secondary? Answer in VA step-up transformer has Np = 46 turns on the primary coil and Ns = 669 turns on the secondary coil. If the primary coil has an input voltage of Vp = 2.94 V, what is the output voltage (Vs) on the secondary coil? Your answer should be in volts, but you don't need to show the units.An external voltage of 60V is applied to a coil whose resistance is 5.25 Ω. What is the current of the coil if the back emf is 9.85 Ω?
- A loop of wire with a radius of 0.16 m and resistance, 47.4 Ohms is in a region with a changing magnetic field that is oriented perpendicular to the loop. If the magnetic field increases linearly from 0.011 T to 0.05 T, over 5.59 x 10-3 s, what is the current in the loop? Please give your answer in Amps.A transformer consists of a 500-turn primary coil and a 2000-turnsecondary coil. If the current in the secondary is 3.0A, what is the current in the primary?A multipurpose transformer has a secondary coil with several points at which a voltage can be extracted, giving outputs of 5.60, 12.0, and 480 V. The input voltage is 240 V to a primary coil of 280 turns. What are the numbers of turns in the parts of the secondary used to produce the output voltages?
- Refer to the figure in the previous question. What is the emf induced when a 5.7-cm conducting rod attached to a U-shaped conductor moves at 1.05 m/s perpendicular to a magnetic field of strength 10.4 T? Please write the numeric answer in terms of V (volts). Normal format with 3 SF.What is the transformation ratio of a transformer having 40 turns on the secondary winding and680 turns on the primary winding?Consider a transformer, used to recharge rechargeable flashlight batteries, that has 500 turns in its primary coil, 7 turns in its secondary coil, and an input voltage of 120 V. Voltage output of transformer used to charge batteries is 1.68. What input current Ip, in milliamps, is required to produce a 3.2 A output current?