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In RC circuit experiment, Time (t2) is that time when
voltage is
a. maximum
b. between Vmax(vo). and half of Vmax
c. at half of Vmax(vo)
d. zero (starting point)
Step by step
Solved in 2 steps with 2 images
- 2. Complete the following table by considering the effect of RC on the charging and discharging times R с Constant Increase Constant Decrease Time to fully charge to Vin(max) (measured) Time to fully discharge to 0 VQ5 / A 9.3 uF capacitor is charged by 60 V batteries and then is disconnected from the battery . The capacitor is discharged through resistor of 1200 Calculate the time constant of the RC circuit ? How long does it take to discharge the capacitor down to 65 % of its maximum voltage ?5. A RC-circuit is composed of a resistor and capacitor linked to a battery. Derive the expression for the charging and discharging of a capacitor. Then, determine their respective currents for both charging and discharging. Plot the differences for cach scenario. What are the long term and short term behaviors?
- A capacitor in RC circuit is charged to one half of its maximum charge in 69.5 s. the capacitive time is: Select one: O a. We can't find it because we don't know R and C O b. 0.01 s Oc. 139 s O d. 100 sQ3. A- 0 to 220 V voltmeter has accuracy of 1.5 % of full scale reading. The theoretical (true) expected value we want to measure it is 78 V. Determine the practical (measured) value and the percentage of error? B- 90 Ohms resistance is connected in shunt of a galvanometer, having an internal resistance of 10 Ohms, to convert it into an ammeter. What is the value of current flowing through the galvanometer, if the total current in the circuit is 2 A? [17.5 Marks]Based on the picture, Determine the voltage across the 7.5 kiloohms resistor if 2 mA current flows on the upper network as shown in the picture. a. 6 V 2.5 V 15 V 10 V Determine the time constant τ (in seconds) of the RC circuit in the picture. a. 30 s b. 3.3 s c. 125 s d. 87.5 s
- 2. An RC circuit is pictured. a. Find the current at time t-o. b. Find the current at time t-0.10 s c. Find the charge on the capacitor after two time constants have passed. d. How long will it take the capacitor to reach 75.0% of its final charge? C 42 HF R 5.3 ks (initially uncharged) Switch (closed at t-o)To reset IC chips in a system at power-on, the chips must be powered on and working already. That is to say that the reset signal needs to be after the power-on time. Assume that you need to generate a reset signal 1 ms after power-on using an RC circuit, what will be roughly the values of the resistor and capacitor?4. The current in the circuit decreases exponentially as it becomes increasingly hard to put more charge on the plate. The RC term in the exponential is called the time constant time constant T. It is clear that RC must have units of time because you can't raise a number to a power that has units. Did you know that an Ohm (Q) multiplied by a Farad (F) is a second? Look up the fundamental units of both and prove that you get seconds when you multiply them.
- A large capacitor of 1000 µF is charged by a steady current of 1 mA until it reaches a voltage of 100 V. At that voltage, the charging circuit is disconnected. a) Calculate how long the charging takes.The internal resistance of a high voltage power supply is 4 MΩ and the output is set so that the potential difference across the output when on open circuit is 1800 V? A load resistor RL = 500 kΩ is connected across the supply. What is the current flowing in the load resistor? Select one: a. 3.6 mA b. 0.4 mA c. 450 μA d. 444 mAA capacitor discharges through a 220kN resistor and drops to its original voltage in 3 min. How many farads is the capacitor? V =VneRČ