Electric Circuits Answers

a series rl is connected to an ac source. voltage across the indulgence is 30 v voltage across the resistor is 40 v. what is the effective voltage of the source
A.70V b. 50V c. 10 V d. 30V

During a fault in a 3 prong device, the surplus charges will travel through the neutral wire. is this statement true or false and what is the solving process

An operator will not have an electric shock when he is using his wet hands to hold an electrical device that has short circuited that is not grounded. True or false and equations to solving this

The waveform of a voltage in an electrical circuit has the following parameters:
 A continuous series of right-angled triangles, each with a base length equivalent to 3 ms
 9 V maximum
 Voltage ramps up over the 3 ms and then drops back to zero instantaneously
 Sketch the waveform and mark on the relevant parameters.
 Derive the function which defines the waveform.
 Using integral calculus, find the RMS value of the voltage.

Two concentric thin metallic spheres having radii 30 cm and 20 cm carry 10 µC and
5 µC, charges respectively. Calculate the electric potential at a distance of 25 cm
from the centre of the spheres.

Two lead-acid automobile batteries are connected in parallel to provide additional starting current one of the batteries is fully charged at 14.2 volts and the other battery has discharged to 9 volts if the internal resistance of each battery is 1 ohm determine the current in the batteries if each battery is intended to provide a maximum current of 150 ampes should the method used to start a car?

Design and draw a voltage comparator circuit using op-amp IC 741 to give +VSat at
the output if the input voltage is less than −3V and −VSat for input more than −3V.

Which parameters of an op-amp become significant for a fast varying ultra low input voltage signal? What should be the values of these parameters for a triangular wave
signal of ±5 mV peak to peak with 50 MHz frequency given to a unity gain op-amp amplifier?

draw a half addercircuit using onanjuly NAND gates

There are three 20.0 ohm resistors in series across a 120.0-V generator. What is the equivalent resistance of the circuit?
What is the current in the circuit?
What is the total voltage drop across the circuit?