Electric Circuits Answers

The maximum safe current that can pass through a resistor of 2 kΩ rated at 0.25 Watts is

The diode is considered shorted when both anode and cathode has?

Explain what happen to a power supply if there is no smoothing capacitor connected across the output?

find electric field of all regions

+sigma =2c ------------------

E=3

-sigma =2c -------------------

You are filling a cylindrical drum (D = 22.5 in., H = 33.5 in.) with water flowing from a garden faucet at a rate of 10 GPM. How long will you have to wait to fill the drum? Express you answer in minutes.

Design a combinational circuit with four inputs— A, B, C, and D —and one output, F . F is to be equal to 1 when A = 1, provided that B = 0, or when B = 1, provided that either C or D is also equal to 1. Otherwise, the output is to be equal to 0. 1. Obtain the truth table of the circuit. 2. Simplify the output function. 3. Draw the logic diagram of the circuit, using NAND gates with a minimum number of ICs. 4. Construct the circuit and test it for proper operation by verifying the given conditions.

A 9v stabilized voltage supply is required to run a car stereo system from car 12 v battery.A zener diode with Vz = 9v and Pmax. = 0.25 W is ued as a voltage regulator as shown in figure .find the value of the series resistor.

The voltmeter reading across R1 is 2,70 V. How will the voltmeter reading change

if R3 is removed? Write INCREASE, DECREASE or REMAINS THE SAME AND explain your answer.

rms value of i= 10 sinwt + 20 cos (wt + 30°)

Power supply voltage ɛ = 10.00 ±0.01V, R =70 ohm

 RL (ohm) I (mA) VRL(VOLT) PRL=IVRL (ohm) RL / (R+RL)

10 40.50 4.42 178.891 800

20 36.00 7.85 282.691 1800

30 32.40 10.60 343.47 3000

40 29.46 12.85 378.479 4400

50 27.00 14.72 397.535 6000

60 24.93 16.31 406.473 7800.00

70 23.15 17.67 408.893 9800.00

80 21.60 18.84 407.076 12000.00

Q: Using the above sheet plot a proper graph P Vs RL? And from the graph find ε₀ 

                      P_RL = ( ε₀ / R + R_L)² R_L