What happens when a current flows through a wire?

Last Answer : When current flows through heater coil it glows but supply wiring does not glow because resistance of heater coil is more than the supply wires.

1 answer

143 views

Find the current through 4 ohm resistor by source transformation

Description : Find the current through 4 ohm resistor by source transformation

0 answers

964 views

Find current through resistor using nodal analysis

Description : Find current through resistor using nodal analysis

Last Answer : Find current through resistor using nodal analysis

1 answer

252 views

For a round wire, the approximate value of fusing current is given by

Description : For a round wire, the approximate value of fusing current is given by

Last Answer : For a round wire, the approximate value of fusing current is given by K√d3

1 answer

110 views

What happens when a neutral wire touches a phase wire ?

Description : What happens when a neutral wire touches a phase wire ?

Last Answer : Maximum current flow due to Short circuit, limited value of fuse will burn else apparatus and conductor will be damaged.

2 answers

354 views

Which wire can carry a higher current stranded wire or solid wire?

Description : Which wire can carry a higher current stranded wire or solid wire?

Last Answer : From the formula R=PL/A resistance rise with the fall of surface area ,inverse proportion relation between Resistance and Area ,so stranded wire has more area that a solid wire so more area less resistance. Less resistance/less electron flow opposition,more electron flow (current)

5 answers

90 views

Why should switch be connected only on the live wire and never on the neutral wire?

Description : Why should switch be connected only on the live wire and never on the neutral wire?

Last Answer : Current runs from the transformer, through the protective device, through the load and back through the protective device (if on RCD). If the protective device is only a CB the current passes ... the circuit will operate correctly but this is an unsafe practice and does not meet the standards.

5 answers

1.3k views

Increasing the number of turns of wire on the secondary of a transformer will

Description : Increasing the number of turns of wire on the secondary of a transformer will (A) Decrease the secondary current (B) Increase the primary current (C) Have no effect on the secondary current (D) Increase the secondary current

Last Answer : Increasing the number of turns of wire on the secondary of a transformer will Decrease the secondary current

1 answer

180 views

lf the wire which is vertical to this page has electron flow downwards the conductor will have

Description : lf the wire which is vertical to this page has electron flow downwards the conductor will have

Last Answer : lf the wire which is vertical to this page has electron flow downwards the conductor will have a counter-clockwise field in the plane of the paper

1 answer

155 views

Wire-wound resistors are unsuitable for use at high frequencies because they?

Description : Wire-wound resistors are unsuitable for use at high frequencies because they?

Last Answer : Wire-wound resistors are unsuitable for use at high frequencies because they exhibit unwanted inductive and capacitive effects.

1 answer

151 views

How is electricity passed through a wire?

Description : How is electricity passed through a wire?

Last Answer : A wire contains mobile electrons as majority charge carriers and holes as minority charge carriers when an emf or potential diffrence is provided , electrons flow in opposite direction with holes(convection current flow)

3 answers

5 views

What gauge wire is in ethernet cable?

Description : What gauge wire is in ethernet cable?

Last Answer : “Cat 5 cable typically has three twists per inch of each twisted pair of 24 gauge (AWG) copper wires within the cables.” (source)

1 answer

10 views

How to Wire Speakers

Description : How to Wire Speakers

Last Answer : How to Wire Speakers Powerful speaker serve many purposes. Amongst these purposes are entertainment during special occasions and event sound system. To maximize its use, you need to understand how much ... long screws rather than short ones. Short screws may not be able to properly secure speakers.

1 answer

14 views

How to Wire a Lamp

Description : How to Wire a Lamp

Last Answer : How to Wire a Lamp Wiring a lamp is something you need to do just in case your lamp breaks, and it so happens you keep on forgetting to get it repaired. It's a relatively easy process, with ... by yourself will also be a great help if you found the perfect lampshade from the flea market. Good luck.

1 answer

11 views

How to Wire a House

Description : How to Wire a House

Last Answer : How to Wire a House Wiring a home is a challenging but worthwhile task. Familiarize yourself with things involved in wiring a home before you start this project. Make this your first priority because ... out more by hiring someone with both experience and expertise to help you in your first attempt.

1 answer

16 views

How to Wire a Three-Way Switch ?

Description : How to Wire a Three-Way Switch ?

Last Answer : How to Wire a Three-Way Switch A three-way switch is the most common system installed in residential areas. This system is used to control a light and receptacle or more from two different switches ... wires for interior use. #14 wires are suggested to be used for protected circuits at 15 amperes.

1 answer

15 views

How to wire a Ceiling Fan ?

Description : How to wire a Ceiling Fan ?

Last Answer : How to wire a Ceiling Fan To wire a ceiling fan is a relatively easy project. Usually, it is similar to working on replacing an existing light fixture. However, you will also need to check the ... have a loose wire connection. In case your fan vibrates or shakes, check if the blades are balanced.

1 answer

151 views

State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

Description : State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

Last Answer : i) Function of Cable box: To hold and inspect incoming and outgoing terminals ii) Function of Guard wire : A grounded conductor placed beneath an overhead transmission line in order to ground ... in service connection: To give mechanical Support to pole, line and prevent leakage current if any

1 answer

3.5k views

The function of steel wire in ACSR conductors is

Description : The function of steel wire in ACSR conductors is (A) To take care of surges. (B) To reduce corona. (C) To reduce inductance. (D) To provide additional mechanical strength

Last Answer : The function of steel wire in ACSR conductors is To provide additional mechanical strength

1 answer

118 views

A fuse wire should have :

Description : A fuse wire should have : (A) Low specific resistance and high melting point (B) Low specific resistance and low melting point (C) High specific resistance and high melting point (D) High specific resistance and low melting point

Last Answer : A fuse wire should have : High specific resistance and low melting point

1 answer

625 views

Aluminium is not used as winding wire for the armature of a dc machine because

Description : Aluminium is not used as winding wire for the armature of a dc machine because (1) aluminium has low resistivity (2) a large winding space is taken by aluminium conductors and creates ... ) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

Last Answer : Aluminium is not used as winding wire for the armature of a dc machine because (2) a large winding space is taken by aluminium conductors and creates jointing problems (3) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

1 answer

76 views

Nichrome wire is an alloy of?

Description : Nichrome wire is an alloy of?

Last Answer : Nichrome wire is an alloy of nickel and chromium.

1 answer

217 views

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

Description : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

Last Answer : If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 0.4 ohm.

1 answer

386 views

The resistance of a few meters of wire conductor in closed electrical circuit is?

Description : The resistance of a few meters of wire conductor in closed electrical circuit is?

Last Answer : The resistance of a few meters of wire conductor in closed electrical circuit is practically zero.

1 answer

3.4k views

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart...

Description : A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span?

Last Answer : A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span 4.0 cm.

1 answer

221 views

In order to achieve high accuracy, the slide wire of a potentiometer should be?

Last Answer : In order to achieve high accuracy, the slide wire of a potentiometer should be as long as possible.

1 answer

161 views

The ground wire should not be smaller than No ______ copper.

Last Answer : The ground wire should not be smaller than No 10 copper.

1 answer

165 views

How do magnets and copper wire make electricity?

Description : How do magnets and copper wire make electricity?

Last Answer : According to Faradays law , a changing magnetic field on a conductor induses current in the conductor through mutual induction.

1 answer

113 views

What is ACCC wire?

Description : What is ACCC wire?

Last Answer : Aluminum Conductor Composite Core

1 answer

230 views

Which color wire is neutral?

Description : Which color wire is neutral?

Last Answer : Black but I think it depends with the place.

3 answers

107 views

What happens to the resistance when the current increases?

Description : What happens to the resistance when the current increases?

Last Answer : Resistance reduces when current increases.

1 answer

181 views

What happens when you reverse the direction of the current in an electromagnet?

Description : What happens when you reverse the direction of the current in an electromagnet?

Last Answer : When you reverse current direction in an electromagnet, the magnetic poles will also change.

1 answer

0 views

I've lost my memory, How do I caculate the value of this resistor?

Description : I've lost my memory, How do I caculate the value of this resistor?

Last Answer : Shoot me if I’m wrong, but don’t you need Ohm’s law for that: http://www.kpsec.freeuk.com/ohmslaw.htm?

1 answer

107 views

Does current flow through a capacitor ?

Description : Does current flow through a capacitor ?

Last Answer : Imagine a pipe with a flexible diaphram in the middle separating two haves of the pipe. Now the pipe is filled with air. If you apply a pressure to one end the diaphram will deform ... capacitor, the effects on electrons will be recreated across the boundary. But theres no electrical connection...

1 answer

281 views

The initial rate of rise of current through a coil of inductance 10 H when suddenly...

Description : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs.

Last Answer : The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is 20 Vs

1 answer

980 views

When an alternating current passes through an ohmic resistance the electrical power converted into heat is?

Description : When an alternating current passes through an ohmic resistance the electrical power converted into heat is?

Last Answer : When an alternating current passes through an ohmic resistance the electrical power converted into heat is true power.

1 answer

104 views

Can you make alternating current through a battery?

Description : Can you make alternating current through a battery?

Last Answer : Yes, we can make AC through a battery using an inverter.

1 answer

226 views

Direct Current (DC)

Description : Direct Current (DC) Next Topic : Alternating current (AC)

Last Answer : Direct Current (DC) is the unidirectional electric current. Uni meaning is one. And the flow of charge in same direction. We know that conventional current flow from positive terminal of battery to ... The magnitude of DC may constant or vary but direction do not change with respect to time.

3 answers

186 views

Alternating current (AC)

Description : Alternating current (AC)

Last Answer : AC stands for Alternating Current meaning voltage or current that changes polarity or direction respectively over time. An Alternating Current (AC) is an electric current whose magnitude ... energy are known as alternators and are simpler construction than DC electromechanical generators.

2 answers

151 views

What kills, current or voltage?

Description : What kills, current or voltage?

Last Answer : Current would kill. You can actually have thousands of bolts going through you and not even know it. Yes you probably know already voltage is current times resistance. Since your body is a resistor it would take just a small amount of current to create a very high voltage

3 answers

425 views

A charge of 0.1 C moves past a given point every 0.01 s. How much is the current?

Description : A charge of 0.1 C moves past a given point every 0.01 s. How much is the current?

Last Answer : The current is 10.0A. 1ampere = 1 Coulomb per 1 second. 0.1Coulombs ÷ 0.01seconds = 10.0amperes.

1 answer

5.3k views

Describe the difference between direct and alternating current.

Description : Describe the difference between direct and alternating current.

Last Answer : Direct current is the flow of electricity or charge in one direction.. Alternative current is the flow of charge that doesn't flow in one direction.

4 answers

100 views