The 460-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil is to supply 15.0 A at 6.30 V (rms). 1) Assuming no power loss in the transformer, calculate the number of turns in the secondary coil. (Express your answer to two significant figures.) Submit turns 2) Assuming no power loss in the transformer, calculate the current in the primary coil. (Express your answer to two significant figures.) Submit A

The 460-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil is to supply 15.0 A at 6.30 V (rms). 1) Assuming no power loss in the transformer, calculate the number of turns in the secondary coil. (Express your answer to two significant figures.) Submit turns 2) Assuming no power loss in the transformer, calculate the current in the primary coil. (Express your answer to two significant figures.) Submit A

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 46P: An ac source of emf delivers 5.0 mW of power at an rms current of 2.0 mA when it is connected to the...

See similar textbooks

Similar questions

A step-up transformer is designed so that the output of its secondary winding is 2000 V(rms) when the primary winding is connected to a 110-V (rms) line voltage, (a) If there are 100 turns in the primary winding, how many turns are there in the secondary winding? (b) If a resistor connected across the secondary winding draws an rms current of 0.75 A. what is the current in die primary winding?
An ac source of emf delivers 5.0 mW of power at an rms current of 2.0 mA when it is connected to the primary cod of a transformer. The rms voltage across the secondary coil is 20 V. (a) What are die voltage across the primary coil and the current through the secondary coil? (b) What is the ratio of secondary to primary turns for the transformer?
What is the self-inductance of a coil whose reactance is 10 at 60 Hz?
A transformer is used to supply a 12-V model train with power from a 110-V wall plug. The train operates at 50 W of power, (a) What is the rms current in the secondary coil of the transformer? (b) What is me rms current in the primary coil? (c) What is the ratio of the number of primary to secondary turns? (d) What is the resistance of the tram? (e) What is the resistance seen by the 110-V source?
A coil with a self-inductance of 16 mH and a resistance of 6.0 is connected to an ac source whose frequency can be varied. At what frequency will the voltage across the coil lead the current through the coil by 45 ?
The 380-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil is to supply 15.0 A at 6.30 V (rms). 1)Assuming no power loss in the transformer, calculate the number of turns in the secondary coil. (Express your answer to two significant figures.) 2)Assuming no power loss in the transformer, calculate the current in the primary coil. (Express your answer to two significant figures.)
A neon sign transformer has a 520W520W AC output with an rms voltage of 17 kVkV when connected to a normal household outlet. There are 500 turns of wire in the primary coil. How many turns of wire does the secondary coil have? Express your answer as the number of the turns. When the transformer is running at full power, what is the current in the secondary coil? Express your answer in amperes. The current in the primary coil? Express your answer in amperes.
The 380-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil voltage is 6.50 V (rms). 1)Calculate the number of turns in the secondary coil. (Express your answer to two significant figures.)
A transformer is rated at 803W and transforms a higher AC V rms to 316V-AC. the number of turns in the lower voltage coils is 348. what is the peak alternating current in A in the higher voltage coils of the transformer if it has 613 turns? Note: 1.44 A is wrong
The 250- turn primary coil of a step-down transformer is connected to an AC line that is 120.0 V (rms). The secondary coil is to supply 14.0 A (rms) at 9.60 V (rms). Assuming no power loss in the transformer, what is the number of turns Ns in the secondary coil? What is the rms current ip,rms in the primary coil?
The charger for a cell phone contains a transformer that reduce 120 V ac to 5.0 V ac to charge the 3.7 V battery. Suppose the secondary coil contains 30 turns and the charger supplies 700mA. Calculate the current in the primary coil.
. A coil of inductance 0.5H and resistance 100n is connected to a 240V,50HZ ac supply. a) What is the maximum current in the coil?