How does joule heat vary with increasing and decreasing resistances?

Q: Does heating a metal wire increase or decrease its electrical resistance?

A: When a metal wire is heated, the electrons in the wire gets thermal energy and it gets more vibrant…

Q: How does the resistance of a wire vary with its area of cross-section?

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Q: How are the two types of circuit arranged differently?

A: To connect the two or more electrical devices in a circuit with an energy source, there are two main…

Q: How does the resistance of a metallic wire depend on its

A: Given;  Explain with reason, How does the resistance of a metallic wire depends on its temperature.

Q: What is the general name of the substances having infinitely high electrical resistance?

A: For insulator, the value of resistance is very high.

Q: In the relationship between voltage and circuit, why there is a change in current when resistor is…

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Q: Show the relationship between current and resistance in a circuit by describing how one affects the…

A: Required: The relationship between the current and resistance in a circuit

Q: How is rechargeable batteries safe and good for the environment?

A: Rechargeable batteries can contain metals that may be harmful to the environmental if not disposed…

Q: What is the effect of increasing/decreasing the resistance on the amount of current?

A: By ohm's law  We know that V=IR where V is voltage  I is current and R is resistance  R=VI

Q: What is the dunction of fuses or circuit breakers in a circuit?

A: Fuses and circuit breakers both are used to protect circuit.

Q: What Are The Disadvantages Of Heating Effect Of Current?

A: When the current flows through the conductor it developed an amount of heat due to the resistance…

Q: How to determine the electrical resistance of a given material?

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Q: Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal?

A: The electric toaster and electric irons are made up of alloy rather than pure metal because the…

Q: What is the effect on the current in a wire if both the voltage across it and its resistance are…

A: Ohm’s law is given by

Q: Two wires one of copper and other of iron, are of the same length and same radius. Which will have…

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Q: How does the resistance of a wire depend on its length?

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Q: when does conduction electrification occur?

A: Electric charge - Electrical charges are one of the matter characteristics. If a body has extra…

Q: What causes electric shock - current or voltage?

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Q: What is the relationship between voltage, current and resistance?

A: In this problem, it is asking about the relation between voltage, current and resistance.

Q: Which bulb has more resistance?

A: Given in question: For bulb A -  Power(PA) = 40W, Voltage(VA)= 20 V…

Q: double the resistance of

A: When we know the length and the cross-sectional area of a conductor, the electrical resistance of a…

Q: Why is the tungsten used almost exclusively for filament of electric lamps?

A: In most of the electric bulbs and lamps tungsten is used as filament. The main reason is high…

Q: How does the current vary with the voltage?

A: Let current be represented by I, voltage be represented by V, and resistance be represented by R.

Q: What is the pattern for how voltages gets distributed in parallel circuit for equal resistances?…

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Q: On which factors does resistivity depends?

A: Resistivity is a measure of the resistance of a given size of a specific material to electrical…

Q: What determines the rate at which energy is delivered by a current?

A: The concept of power in electrical devices is the electrical energy per unit time transferred by an…

Q: Under what conditions would increasing a voltage have no effect on the current moving through a…

A: The relation between the voltage , resistance and current is given by Ohm's law as follows:V = IR…

Q: s this a series or parallel circuit?

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Q: What could happen to the current if you kept the voltage constant but switched out the light bulb…

A: According to Ohm's law, Resistance=Voltage/Current. Given that the voltage is kept constant.

Q: the decrease in voltage between two ends of a resistor is called?

A: We can measure between the voltage between the two ends of a resistor and on finding the values we…