A transformer has 100 turns on the primary and 300 turns on the secondary. The primary rms voltage is 12 V and the load is 30 ohms. Find the rms voltage across the load, the rms current through the load, and the rms current in the primary. O 36 V, 1.2 A, 3.6 A O 4V, 0.13 A, 0,4 A O 36 V, 0.4 A, 1.2 A O 36 V, 1.2 A, 1.2 A
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- A transformer has a primary coil with 150 turns of wire and a secondary coil with 300 turns. An AC power supply connected across the primary coil has a voltage given by the function Δv = (160 V)sin(?t). What rms voltage (in V) is measured across the secondary coil?A 60.0 W light bulb is plugged into a standard wall outlet that is a source of an AC voltage: by 8 = 170.0 sin (377t), where e is in volts and t is in seconds. The resistance of the bulb and the rms current in the bulb are: O a. 241 ohms, 0.500 O b. 12.0 ohms, 6.00 A O c. 80.0 ohms, 0.352 A O d. 482 ohms, 0.352 A O e. 2.83 ohms, 6.00 AA DC circuit consists of a 30.5 V battery connected in series to two components. The first component is a variable resistor set to 1.7 Ohms. The second component is a set of four fixed resistors connected in parallel. The first fixed resistor is 7.9 Ohms, the second fixed resistor is 6.5 Ohms, the third fixed resistor is 5.3 Ohms and the fourth fixed resistor is 7.9 Ohms. What is the total current supplied by the battery to the circuit? Use standard abbreviations for MKS units. Your Answer: Answer units
- An inductor is connected to a 15 kHz oscillator that produces an rms voltage of 6.0 V. The peak current is 65 mA. What is the value of the inductance L?A transformer has a primary coil with 225 turns of wire and a secondary coil with 900 turns. An AC power supply connected across the primary coil has a voltage given by the function Δv = (120 V)sin(ωt). What rms voltage (in V) is measured across the secondary coil?A power plant produces a voltage of 6.0 kV and 150 A. The voltage is stepped up to 250 kV by a transformer before it is transmitted to a substation. What is the current in the transmission line from the plant to the substation?
- We are given an RC circuit with R = 29kΩ, C = 0.4µF, and the rms voltage applied is 110V at a frequency of 55Hz.What is the rms current in this circuit?Time t < 0, the circuit is in DC Steady State. The switch is opened instantly at time t=0. When t<0, I₂ = 7 A, and I₃ = 9 A. R₁ = 5 Ω, R₂ = 4 Ω, and R₃ = 4 Ω. The solution for I₂ is I2 = I 0 e^ − R t / L. With several resistors in the circuit, the question is, what resistance do we use for R? Answer this question (in Ohms).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 primary circuit in a transformer carries a current of 4.0 A at 120 V. The secondary circuit of a transformer carries 1.0 A of current. If only 90.0 % of the power is transmitted from the primary circuit to the secondary circuit, what is the voltage of the secondary circuit?An a.c voltage source has an output of (2.0x10^2V)sin2πft. The source is connected to a 1.0x10^2 ohm resistor. Find the rms voltage and rms current in the resistor.