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In a parallel circuit there is more than one path for the current to flow along.
When cells are connected in parallel the total value of the cells is the same as each individual cell.
For two 1.5 V cells in parallel, the voltage stays at 1.5 V, but the life of the battery is doubled.

Solder is a metal alloy usually made of tin and lead which is melted using a hot iron.
A higher tin composition gives the solder higher corrosion resistance but raises the melting point
The composition of electrician solder is
Tin-60%, Lead-40%.

A Britannia joint is a special type of joint used for overhead wiring. It is an electronic joint used for bare overhead wires to provide them with adequate tensile strength. Each wire is tightly tinned then a short shoulder bent is fitted in them.

In order to neutralize the cross magnetizing effect of armature reaction, a compensating winding is used. The compensating windings consist of a series of coils embedded in slots in the pole faces. These coils are connected in series with the armature.

Red wire signifies the phase in electric circuit. It is he live wire which cannot be connected to another red wire or black wire. Red is used in some types of switch leg. Switch leg is the wire that comes off from the bottom terminal of a switch and when the switch is turned on becomes hot.

Stepper motors are brushless DC motors with many internal teeth that magnetically lock into position with surrounding copper coils. Unlike brushless motors, applying power to a stepper motor will not make it turn.

A dry cell is usually made from zinc which serves as the anode with a negative electrical polarity, while the inert carbon rod is the positive electrical pole cathode. General purpose batteries may use an aqueous paste of ammonium chloride as electrolyte, possibly mixed with some zinc chloride solution.

A cell whose energy can be renewed by passing a current through it in the direction opposite to that of the flow of current generated by the cell.

A tube light consists of a filament & a choke or inductor for the lightening purpose. This is due to the choke. An inductor does not allows sudden change in its current; so after some time it glows. So, a capacitor is connected in parallel with this circuit.

The synchronous speed is the speed of the revolution of the magnetic field in the stator winding of the motor. It is the speed at which the electromotive force is produced by the alternating machine.

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