The primary coil of a transformer has N1 = 350 turns, and the secondary coil has N2 = 2 000 turns. If the input voltage across the primary coil is Δυ = 170 cos ωt, where Δυ is in volts and t is in seconds, what rms voltage is developedacross the secondary coil?

A transformer has two sets of coils, the primary with N1 = 190 turns and the secondary with N2 = 925 turns. The input rms voltage (over the primary coil) is ΔV1rms = 258 V. 1. Express the output rms voltage, ΔV2rms, in terms of N1, N2, and ΔV1rms.  2. Calculate the numerical value of ΔV2rms in V.

A neon sign achieves high voltage with a transformer with 300 primary coil turns.  The rms voltage is 120 V at primary, and 10 kV at secondary.  The secondary coil has _____ turns.

A step-down transformer is used for recharging the batteries of portable electronic devices. Theturns ratio N2/N1 for a particular transformer used in a DVD player is 1:13. When used with 120 V (rms)household services, the transformer draws an rms current of 20.0 mA from the house outlet. Find (a) therms output voltage of the transformer and (b) the power delivered to the DVD player.

The figure below shows an AC source, a transformer with a turns ratio of N₁/N₂ = 2.70, a source resistor Re, and a load resistor R₁. S' AVS R₂ ww ellee N₂ RL A voltmeter across the load resistor measures an rms voltage of 26.0 V when the load resistor R₁ is 48.0 and the rms source voltage is AV = 86.0 V. (a) Determine the value of the source resistor R (in ). How is the rms voltage across the secondary coil related to that of the primary? How is the power delivered to the primary related to the power delivered to the load resistor? How are the voltages across each element on the primary side related to each other? Q (b) What If? If the turns ratio is increased to 3.00, determine the source resistance (in 2) required to deliver the same amount of power to the load. X How can you modify your work from part (a) in order to determine the source resistance required to deliver the same amount of power to the load resistor as in part (a)?

The primary coil of a transformer has N1 = 370 turns, and the secondary coil has N2 = 2 430 turns. If the input voltage across the primary coil is Δv(t) = 170 cos ?t, where Δv is in volts and t is in seconds, what rms voltage is developed across the secondary coil?

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