
A transformer changes the 10.000 Vrms) innut line to 120 Vrms output. If the primary.com contains 750 turns, how many t...
A transformer has 490 turns on its primary. An AC source supplies 120 Vrms on the primary and the transformer delivers 9.0 V on its secondary. How many turns are on the secondary? Consider again the transformer described in the problem above. If 25 mA of current is going into the primary, what current is being drawn at the secondary? Please explain/show your work!
A transformer changes 120 V across the primary to 1200 V across the secondary. If the secondary coil has 1556, how many turns does the primary coil have?
A plug-in transformer supplies 9.00 V to a video game system. (a) How many turns are in its secondary coil if its input voltage is 120 V and the primary coil has 383 turns? turns (b) What is its input current when its output is 1.39 A? A
A plug-in transformer supplies 9.00 V to a video game system. (a) How many turns are in its secondary coil if its input voltage is 120 V and the primary coil has 383 turns? turns (b) What is its input current when its output is 1.39 A? A
18. Al wat rate would the current in a 100-mH inductor have to change to induce an emf of 1000 V in the inductor? 19. A transformer changes the 10,000 V power line to 120 V. If the primary coil contains 750 turns, how many turns are on the secondary? 20. A series circuit consists of a H an - -- - -- 19. A transformer changes the 10,000 V power line to 120 V. If the primary coil contains...
2. The ac adapter for a laptop computer contains a transformer. The input of the adapter is the 120 volts from the ac wall outlet. The output from the transformer is 20 volts. What is the turns ratio of the transformer? a. 100 b. This cannot be determined without knowing how many turns one of the coils in the transformer has. c. 0.17 d. 6
The primary 40-turn coil of an ideal transformer is supplied with 120 V (rms). If the rms voltage output of the secondary coil is 15 V, how many turns are in the secondary coil, and what type of transformer is this? 8 turns, step-down transformer 5 turns, step-down transformer 15 turns, step-down transformer 320 turns, step-up transformer 160 turns, step-up transformer
A transformer 840 turns of wire in its primary and 660 turns of wire in its secondary. A voltage Vrms = 120 volts is applied to the primary. A current Irms = 0.16 A flows into the primary. A light bulb -- acting like an ideal resistor -- is attached to the secondary. What is the resistance of the light bulb ? a. 1200 Ω b. 460 Ω c. 260 Ω d. 90 Ω e. 950 Ω
A transformer connected to a 120 V (rms) a line is to supply 12.0 V (rms) to a 5.00 Ohm resistor in the secondary circuit. (a) What should the ratio of turns of the primary to secondary circuit of the transformer be? (b) What is the average power delivered to the secondary? (c) Assuming the transformer to be ideal (i.e., 100% of the power in the primary is transferred to the second), what is the rms current in the primary?
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 6.00 V. The RMS current delivered to the answering machine is 600 mA. If the primary (input) coil of the transformer has 360 turns, then how many turns are there on the secondary (output) coil? Tries 0/20 What is the power drawn from the electric outlet, if the transformer is assumed to be ideal? Tries 0/20 What...