An inductance coil draws 3.7 A dc when connected to a 36 V battery. When connected to a 60-Hz 120 V (rms) source, the current drawn is 2.0 A (rms)
Determine the resistance of the coil.
Determine the inductance of the coil.
An inductance coil draws 3.7 A dc when connected to a 36 V battery. When connected...
a) A coil having resistance of 12 2 and an unknown inductance is connected in series with a 14uF capacitor. The circuit draws maximum current when a voltage of 200 V at 60 Hz is applied. A second capacitor is then connected in parallel to the circuit. i) What should be its value (capacitance), such that the combination acts like a non- inductive resistance, with the same voltage (200V) at 120 Hz? [3.0 marks] ii) Calculate the supply current drawn...
A coil has an inductance of 0.250 H and a resistance of 20.0 Ω. The coil is connected to a 6.00-V ideal battery. When the current reaches half its maximum value, at what rate is energy being dissipated?
a coil having a resistance of 8 and inductance of 0.04 h is connected across 100 V, 60 Hz supply calculate the current through the coil
ogf induced in a coil is 0.72 V when the current in the coil changes to 1.6 A in 0.25 s. What is the self-inductance L of the coil? An alternating voltage with a peak voltage of 12 V and a frequency 60 Hz is connected in series to a resistor with resistance R : 10 ?, a capacitor with capacitance C-1000 ?F, and an inductor with inductance L 500 mH. Determine the root-mean-square current in the circuit. (a)
A coil with inductance of 3.0
H and a resistance of 34.0 ? is suddenly
connected to a resistanceless battery with ? = 100.0 V, by
closing the switch.
What is the equilibrium current?
How much energy is stored in the magnetic field when this
current exists in the coil?
Question 4 In Figure Q4, a resistance, R is connected in series with an iron-cored choke coil (r in series with L). The circuit draws a current of 5 A at 240 V, 60 Hz. The voltages across the resistance and the coil are 100 V and 200 V respectively. Analyze the circuit to determine the following (a) the resistance, reactance and impedance of the coil, (b) the power absorbed by the coil, and (c) the power factor (pf) of...
An inductor and a resistor are connected in series. When connected to a 60-Hz, 90-V (rms) source, the voltage drop across the resistor is found to be 46 V (rms) and the power delivered to the circuit is 12 W. (a) Find the value of the resistance. Ω (b) Find the value of the inductance. H
A coil with a self-inductance of 4 H and a resistance of 14 ohm is connected across a 22 V battery of negligible internal resistance. What is the final current? A How much energy is stored in the inductor when the final current is attained? J
The switch in an effective LR series dc-circuit (consisting of an emf and a coil with inductance L = 0.5 H and unknown internal resistance) is closed at t = 0 sec. At t = r, the current is 9.5 A and is increasing at a rate of 1.1 A/s. What must the internal resistance of the coil be? A step-up transformer is designed to have an output voltage of 1800 V (rms) when the primary is connect across a...
A 12-V battery is connected in series with a switch, resistor and coil. If the circuit's time constant is 2.0 ´ 10-4 s and the final steady current after the switch is closed becomes 1.0 A, what is the value of the inductance? Question 60 options: 1) 1.2 mH 2) 2.4 mH 3) 9.6 mH 4) 48 mH 5) 96 mH WILL RATE!!