Example 1: If the resistance of an electric iron is 50 Q and a current of 3.2 A flows through the resistance. Find the voltage drop acoss the iron.

Q: The resistance of a length of copper wire is 3.60 ohms at 20oC. At what temperature will the…

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Q: 2. A copper bus bar has a rectangular cross-section of dimensions 6 in. by 8 in. Determine the…

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Q: Look for Requivalent(Equivalent Resistance).Please show details

A: In this question, we need to determine the equivalent resistance across the terminals a and b. Here…

Q: The resistance of a silver wire is 0.1 at 20C. At what temperature will its resistance decrease by…

A: Given; Ri=0.1 ΩRf=0.25×0.1=0.025 ΩT=20° Cα=0.0038 /°C

Q: A charge of 2 mC flows through a cross section 2.5 mm2 normally in 2 seconds. The current is ?

A: The current in a conductor is  , the rate of flow of charge across a cross-section normal to the…

Q: I want an assembly where total 10 C negative charge will be contained. Estimate how many electrons…

A: Electrons are negatively charged particles and the charge of an electron can be expressed as

Q: The value of resistance in insulators is a. can not be determined b. zero c. large d. small

A: Insulator opposes current .

Q: How many electrons does pentavalent atoms have? Select one: a.1  b.4  c.5  d.3

A: Pentavalent Elements: These elements are used to makes n-type semiconductor material. In the outer…

Q: Determine the resistance of a bus bar made of copper if the length is 10 meters long and the  cross…

A: Busbars are often situated inside switchgears, panel boards, or busways and serve to conduct a large…

Q: 2.2. The electrons in a piece of n-type semicon- ductor take 10 ps to cross from one end to another…

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Q: 2. In a semiconductor crystal, the atoms are held together by a. Covalent bonds b. Forces of…

A: Choose the correct option    In a semiconductor crystal, the atoms are held together by?

Q: Current in a semiconductor is generated as follows: Please choose one: a. only holes b. electrons…

A: Semiconductor offers conductivity in between insulators and metals.

Q: What is the resistance of a platinum resistor at 480 degrees C, if its resistance at 16 degrees C is…

A: Given  Resistance at 16 degrees=110 ohms  Coefficient =0.00385  We need to find the resistance at…

Q: By doing the " Coloumbs Law Lab " how do you calculate the electric force on suspended balloon and…

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Q: A circuit delivers energy at the rate of 20 W and the current is 10 A. Determine the energy of each…

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Q: A copper wire has a resistance of 2.4 ohms at 20-deg. Find its resistance at 75-deg. Resistance…

A: In this question we need to find a resistance of wire at 75°C

Q: An electron has a charge of -1.6 x 10-1⁹ C. How many electrons would be needed to produce a net…

A: Given, Charge on electron, e=-1.6×10-19 C Net charge, Q=-5.8×10-6 C

Q: 1- If we use 5000 μF, we can get a very low ripple voltage. But this is so bad and this a…

A: Ripple voltage is the amount of AC voltage appearing on a DC voltage. for the ripple voltage the…

Q: The length and diameter of copper wire are found to be 100 and 0.002 m respectively consider that…

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Q: The resistance of wire increases from 40 – ohm at 20 0C to 50 – ohm at 70 0C. Find the temperature…

A: Write the given values in the question. R20=40 ΩR70=50 ΩT20=20° CT70=70° C

Q: The references for the voltage and current at the terminals of acircuit element are as shown . The…

A: Since the current entering the positive terminal so we can see that the electrons are delivering the…

Q: What is the p.d. across a resistance dissipating 50 W of power while the strength of current is 5 A?…

A: Given values are - P=50WI=5A

Q: A resistor has a resistance of 43.6 ohm at 20°C and 50.8 ohm at 60°C. Determine the temperature…

A: Resistance at any temperature R =R0(1+( temperature coefficient of resistance )*temperature R0 is…

Q: temperature

A: In this question , effect of temperature on resistance is given...We have to find out resistance of…

Q: Some copper wire has a resistance of 200 at 20°C. A current is passed through the wire and the…

A: The solution can be achieved as follows.

Q: nichrome ribbon resistor elements each has a resistance of 1 ohm. the element is made from sheet of…

A: Given that  Resistance of nichrome ribbon resistor elements  is 1 ohm Thickness of nichrome…

Q: Find a state space model for the following electrical network. Let the output of the system be y(t).

A: Given: An electrical network for which a state space model is to be found. Formula and concept: KCL…

Q: You are given two metal samples. The first one is pure and the other one is unrefined. Will there be…

A: Semiconductor devices are used nowadays very widely. They use silicon- and germanium-based devices.…

Q: A copper wire has a resistance of 0.85 ohm at 200C. What will be its resistance at 400C ?…

A: Given, copper wire has resistance at 200C, R20=0.85 ohm Temperature coefficient of resistance of…

Type of Magnetic Material

Every material has a unique composition that defines its magnetic behavior. Some materials get attracted towards a magnet and are called magnetic materials. Based on the magnetic properties held by each material, they are classified into different types.