alternating current
... When a resistor is connected across an sinusoidal A.C. source of peak voltage 170 V, the average power dissipated is 40 W. Two such identical resistors are now connected in series to the electrical mains of 220 V r.m.s. ...
... When a resistor is connected across an sinusoidal A.C. source of peak voltage 170 V, the average power dissipated is 40 W. Two such identical resistors are now connected in series to the electrical mains of 220 V r.m.s. ...
Ohm`s Law Lab
... Reproduce Ohm’s Law For reference, see: http://njc.tl/181 Background: Ohm’s law states that if the temperature of a resistor remains constant, the electric current (I) flowing in a circuit is directly proportional to the applied voltage (V) and inversely proportional to the resistance (R) of the c ...
... Reproduce Ohm’s Law For reference, see: http://njc.tl/181 Background: Ohm’s law states that if the temperature of a resistor remains constant, the electric current (I) flowing in a circuit is directly proportional to the applied voltage (V) and inversely proportional to the resistance (R) of the c ...
Automatic Street Light Control
... manufactured in different shapes, colors and sizes. For their low price, low consumption and simple use, they have almost completely pushed aside other light sources- bulbs at first place. They perform similar to common diodes with the difference that they emit light when current flows through them. ...
... manufactured in different shapes, colors and sizes. For their low price, low consumption and simple use, they have almost completely pushed aside other light sources- bulbs at first place. They perform similar to common diodes with the difference that they emit light when current flows through them. ...
of the field.
... If the thumb and first two fingers of the left hand are placed comfortably at right angles to each other, With the first finger pointing in the direction of the field and the second finger pointing in the direction of the current flow (convectional), then the thumb points in the direction of the thr ...
... If the thumb and first two fingers of the left hand are placed comfortably at right angles to each other, With the first finger pointing in the direction of the field and the second finger pointing in the direction of the current flow (convectional), then the thumb points in the direction of the thr ...
Chapter 6 - Electricity
... Ampere - two currents exert forces on each other no permanent magnets involved! Magnetismhas to do with moving charges ...
... Ampere - two currents exert forces on each other no permanent magnets involved! Magnetismhas to do with moving charges ...
ENGR 101 The Resistor Color Code Measuring Resistance
... Don't try to measure the resistance of a resistor while it is connected in a dead circuit. (You can possibly get an incorrect reading.) Disconnect at least one side of the resistor. ...
... Don't try to measure the resistance of a resistor while it is connected in a dead circuit. (You can possibly get an incorrect reading.) Disconnect at least one side of the resistor. ...
Lab 40 ELECTRICAL TRANSFORMERS
... It consists of two coils of wire sharing an iron core; the iron core improves the magnetic link between the coils. AC voltage is applied to the input (or primary) coil. The back and forth sloshing of the AC current produces an alternating magnetic field, which causes the electrons in the output (or ...
... It consists of two coils of wire sharing an iron core; the iron core improves the magnetic link between the coils. AC voltage is applied to the input (or primary) coil. The back and forth sloshing of the AC current produces an alternating magnetic field, which causes the electrons in the output (or ...
Electric current 2
... - Current density is charge flow at a certain point and contains information for direction - Current describes how all the charges in an object such as a wire flow - Current density varies around a loop of a circuit, current does not. - Current flow can contain different types of charged particles a ...
... - Current density is charge flow at a certain point and contains information for direction - Current describes how all the charges in an object such as a wire flow - Current density varies around a loop of a circuit, current does not. - Current flow can contain different types of charged particles a ...
410KB - NZQA
... • Explains why initially little current flows through the inductor AND Explains why finally most of the current flows through the inductor and not the resistor. ...
... • Explains why initially little current flows through the inductor AND Explains why finally most of the current flows through the inductor and not the resistor. ...
ch-26-Current and Resistance
... for a specific potential difference across its two ends. R = V/i High R means little i for a specific V. Can two objects made from the same material have different R? Two wires of the same length, made of the same material have different cross sectional areas. Which one has a larger R? ...
... for a specific potential difference across its two ends. R = V/i High R means little i for a specific V. Can two objects made from the same material have different R? Two wires of the same length, made of the same material have different cross sectional areas. Which one has a larger R? ...
Theory
... Include these values, the temperature values, and the ratio R/Ro, in a table. Graph R/Ro, against T from the starting temperature to the ending temperature. Draw a straight line that best fits the ...
... Include these values, the temperature values, and the ratio R/Ro, in a table. Graph R/Ro, against T from the starting temperature to the ending temperature. Draw a straight line that best fits the ...
Galvanometer
A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current. It is an analog electromechanical actuator that produces a rotary deflection of some type of pointer in response to electric current through its coil in a magnetic field.Galvanometers were the first instruments used to detect and measure electric currents. Sensitive galvanometers were used to detect signals from long submarine cables, and to discover the electrical activity of the heart and brain. Some galvanometers use a solid pointer on a scale to show measurements; other very sensitive types use a miniature mirror and a beam of light to provide mechanical amplification of low-level signals. Initially a laboratory instrument relying on the Earth's own magnetic field to provide restoring force for the pointer, galvanometers were developed into compact, rugged, sensitive portable instruments essential to the development of electrotechnology. A type of galvanometer that records measurements permanently is the chart recorder. The term has expanded to include use of the same mechanism in recording, positioning, and servomechanism equipment.