Electric Circuits Answers

two metallic charge spheres wbhose radii are 20cm and 10cm respectively, have each 150mC charge. the common potential after they are connected by a conducting wire is

What is the effect of corona discharge on lightning rods

Two cells each of emf 2v and internal resistance 0.5 ohms are connected in series. They are made to supply currents to a combination of three resistors, one of the resistance 2ohms is made is connected in series to a parallel combination of two other resisters each of resistance 3 ohms.

Draw the circuit diagram and calculate.

i. Current in the circuit

ii. The potential difference across the parallel combination of the resistor

iii. Lost voltage of the batting.

A G coil with its internal resistance 15 Ω, shows its full-scale deflection at 2 mA. How would you 

convert it into an A of range 0-5 A and a V of range 0-15 V? Give detailed calculations and draw 

the circuit diagrams for these conversions by mentioning the evaluated values of resistances.

A capacitor of 5 micro farad is charged to 1 C by using a constant voltage supply. If one of the plates of charged capacitor is earthed after disconnecting it from external voltage supply. Find the new capacitance

if a sine wave has a rms voltage of 12 volts what will be its peak-to-peak voltage

The current in a certain conductor is 40mA

No 1. Find the total charge in coulombs that passes through to the conductor in 1.5s

No.2. Find the total number of electrons that pass through the conductor in that same time