Theelectrical resistanceof an electrical conductor is a measure of the difficulty to pass an electric current through that conductor. A conductor has free electrons randomly moving inside. When anelectric potential is applied to it, the electrons collide with other atoms and molecules of the conducto...
What is electrical resistivity ? In a series electrical circuit comprising a resistor made up of a matallic wire, the ammeter reads5A. The reading of the ammeter decreases to half when the length of the wire is doubled. Why ? View Solution ...
What Is a Resistor? The majority of electric circuits commonly contain a resistor. An electrical resistor is indeed a passive part that prevents or hinders the passage of charges. Resistance is the ability of a resistor to restrict the flow of electricity through a circuit or a component. ...
Ohm's law says that in an electrical circuit, the current passing through a resistor between two points, is related to the voltage difference between the two points, and inversely related to the electrical resistance between the two points. This relation is shown in the following pee Where I ...
A Resistor is an electrical device that resists the flow ofelectrical current. It is a passive device used to control, or impede the flow of, electric current in an electric circuit by providing resistance, thereby developing a drop in voltage across the device. ...
A three resistor of 20 ohms is added in parallel with R1 and R2. What happens to the equivalent resistance of the circuit? If the resistance R is doubled, what will happen to the electric current flowing in the resistance? a. Current will double. ...
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This means that in the case of using a resistor to protect an LED – it doesn’t matter if you place it before or after the LED. In both of the circuits below, theresistor protects the LED: Electric Charges Don’t Accumulate Anywhere ...
A material that conducts electricity fairly well but not as well as a conductor is known as aresistor. The most common example of a resistor is a combination of carbon and clay, mixed in a specific ratio to produce a constant, predictable opposition to electric current. All normal conductors...
Draw a graph of Potential difference (V) versus Current (I) for an ohmic resistor. View Solution Draw a graph of potential difference (V) versus current (I) for an ohmic resistor. View Solution Exams IIT JEE NEET UP Board Bihar Board ...