The primary coil of an ideal transformer provides 2000 V at 0.01 A. The secondary coil operates on 120 V. What current flows through the secondary coil?
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The primary coil of an ideal transformer provides 2000 V at 0.01 A. The secondary coil operates on 120 V. What current flows through the secondary coil?
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- The load resistance on the output side of the transformer is 100Ω. What is the current flowing on the primary side (IP) of the transformer IP = _______________A transformer has 900 turns on its secondary and 100 turns on its primary. The primary is connected to a 18-V source. (a) What is the voltage output of the secondary? V(b) If 3 A flows in the primary coil, how much current is there in the secondary coil? AA transformer has 472 turns on its primary and 108 turns on its secondary. (a) Is this a step-up or a step-down transformer? (b) If a voltage of 103 V is applied to the primary and a current of 0.4 A flows in these windings, what are the voltage output of the secondary and the current in the secondary?voltage Vcurrent A
- The plug-in transformer for a laptop computer puts out 22.5 V and can supply a maximum current of 3.00 A. Find the maximum input current if the input voltage is 240 V.Qustion 20The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 45:1. The primary coil is plugged into a standard 120-V outlet. The current in the secondary coil is 1.9 x 10-3 A. Find the power consumed by the air filter.
- Question in the imagesThe transformer on a utility pole steps the voltage down from 10000 V to 220 V for use in a college science building. During the day, the transformer delivers electric energy at the rate of 10.0 kW. a) Assuming the transformer to be ideal, during that time, what are the primary and secondary currents in the transformer? b) If the transformer is only 90 % efficient (but still delivers electric power at 10.0 kW), how does its input current compare to the ideal case? c) At what rate is heat lost in the nonideal transformer? d) If you wanted to keep the transformer cool and to do this needed to dissipate half of the joule heating of part c) using water cooling lines (the other half is taken care of by air cooling), what should be the rate of flow (in liters per minute) of water in the lines? Assume the input cool water is at 68∘∘F and the maximum allowable output water temperature is 98∘∘F} .Ggg
- The primary coil in an ideal transformer has 1000 turns of wire and an emf of 100 V. The secondary coil has an emf of 10 V. How many turns of wire does the secondary coil have? 100 1000 10,000 100,000Transformers (cont.) Part E- The primary coil of a transformer has 200 turns and the secondary coil has 800 turns. The power supplied to the primary coil is 400 watts. What is the power generated in the secondary coil if it is terminated by a 20-ohm resistor? 20W 200W 400W 800W 8000W 16000W 32000W Part F- A transformer supplies 60 watts of power to a device that is rated at 20 volts. The primary coil is connected to a 120-volt ac source. What is the current I_1 in the primary coil? (Express answer in terms of amperes.) Part G- The voltage and the current in the primary coil of a nonideal transformer are 120 volts and 2.0 amperes. The voltage and the current in the secondary coil are 19.4 volts and 11.8 amperes. What is the efficiency eee of the transformer? The efficiency of a transformer is defined as the ratio of the output power to the input power, expressed as a percentage: e=100Pout/Pine=100Pout/Pin. (Express answer as a percentage.)A device requires a secondary output voltage of 1400 V at a resistance of 200 Ω. The transformer is supplied by a 250 V outlet. What is the power of the transformer of this device?