
A step-up transformer increases 15.1 V to 120 V. What is the ratio of the current...
3. a step-up transformer increases 23 V to 120 V. what is the current in the secondary coil as compared to the primary coil? assume 100% efficiency.
ons Nse-12) Nc(-120) Q1: A 100 VA 120/12-V transformer is to be connected so as to form a step-up autotransformer (see Figure). A primary voltage of 120 v is applied to the transformer. a) What is the secondary voltage of the transformer? Q1: A 100 VA 120/12-V transformer is to be connected so as to form a step-up autotransformer (see Figure). A primary voltage of 120 v is applied to the transformer. a) What is the secondary voltage of the...
A 120 V (rms) power line is connected to the primary of a step-down transformer, with a turn ratio of 12 : 1. The transformer’s secondary is connected to a doorbell, which requires 10.2 W of electric power for its operation. What is the peak instantaneous current in the primary?
9. To step 120 V down to 30 V, what must the turns ratio be? 11. How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 6 V ac?
The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 42:1. The primary coil is plugged into a standard 120-V outlet. The current in the secondary coil is 2.0 x 10-3 A. Find the power consumed by the air filter.
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?
A step-up transformer has a primary coil with 145 loops and a secondary coil with 1,595 loops. If the primary coil is supplied with a household current of 120 V and 12 A, (a) what voltage is produced in the secondary circuit? V (b) What current flows in the secondary circuit? A
2) A portable x-ray unit has a step-up transformer, the 120 V input o which is transformed to the 100 kV output needed by the x-ray tube. The primary has 50 loops and draws a current of 10.00 A when in use. (a) What is the number of loops in the secondary? (b) Find the current output of the secondary 3)Calculate the magnitude of the induced emf when the magnet in Figure (a) is thrust into the coil, given the...
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 has 500 primary turns and 2200 secondary turns. The input voltage is 120 v and the output current is 15.0 A. What is the output voltage and input current assuming 100 percent efficiency?