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?
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...
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!!
RLC resonance 5.2 A A coil with a resistance of 5, and an inductance of 0.03 H is connected in series coil with a with a resistor R = 100 and a capacitor of 200 uF. The supply is giving 220 V at 50 Hz. 5.2.1 Draw the network. (2) 5.2.2 Determine the current drawn in the circuit and the voltage drop across the coil. (Hint find: Zcoil. Ztotal. I, Vcoil) 5.2.3 Draw the phasor diagram of the current in...
A coil which has an inductance of 40mH and a resistance of 2 ohms is connected together to form a LR series circuit. If they are connected to a 20 V DC supply (10 points) • What will be the time constant of the RL series circuit? • What will be the value of the circuit current one time constant after the switch is closed. • What will be the final steady state value of the current?