Electric Circuits Answers

The edges of a square pyramid are made out of wires which are conductively
connected at all vertices. Compute the resistance across the opposite vertices
on a diagonal of the base square, given that the resistance of one meter of the
wire is 1Ω, the height of the pyramid is √7 m and the base length is 2m.

A 9.0 V battery and two restitors are connected. The current through the 3.0 ohm resistor is 2.0 A. What is the potential difference across the restiror R2

Three identical point charges, with mass m=0.10kg, hang from three strings, as shown below. if l =30.0cm and 0=45, what is the value of q?

6. Outline the steps taken with a help of an example how to reduce a circuit connected to points A-B can be reduced to a Thevenin’sand Norton’s sources

A voltmeter coil has resistance 50 ohm and a resistor of 1.15k ohm is connected in series. It can read potential difference upto 12volts . If the same coil is used to construct an ammeter which can measure current upto 2A, what should be the resistance of the shunt used?

Two capacitor connected in series with 100v battery and potential difference across them is 60 $50v. If a capacitor of 0.006mfF is connected in parallel and potential across 2nd capacitor becomes 50v.Find capacitance of both capacitor.

The resistant (R) of a given coil of wire per 1km is 0.4ohms. If 40 of the wire is used to supply 16 amps to an 8kv rated x ray generator connected to 420 v mains supply, calculate the voltage drop on load.

The driver cell of a potentiometer has an emf of 2V and negligible internal resistance . The potentiometer wire has a resistance of 3 ohm . Calculate the resistance needed in series with the wire if p.d 5 mv is required across the whole wire. The wire is 100 cm long and a balanced length of 60 cm is obtained for a thermocouple of emf E . What is the value of E?

In LR series circuit L=20mh..R=5 ohm.. And E=6V.Calculate the time constant of the circuit and the current of the circuit after 5ms when the circuit is on

through a cross section of discharge tube current strength is 5 amphere. if the same no of negative electron and proton are crossing per section then calculate the number of negative electron crossing per section through crossing per section through cross section