1. What happened to the voltage across the resistance box as the current through it was increased? What is the relationship between voltage and current when resistance is fixed?   2.What is the current in a 10 ohms resistor due to a potential difference of 40 V? Explain.

Q: 10. What is the resistance of a circuit with 30V and 2A? 11. What is the resistance of a circuit…

A: 10 )  Using ohms law  V = IR  30= 2×R  R = 15 ohm

Q: 3. Which of the following statement is true? a) Current can exist without voltage c) Current can…

A: Without any voltage in a circuit, the current cannot exist, because the voltage makes the current…

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

A: The relationship between current, voltage and resistance is expressed by Ohm's Law. This states…

Q: 240-Ω  resistor is connected to a variable-voltage power supply. (a) What voltage is necessary to…

A:

Q: 2. The large window air conditioner in Anita Breeze's room draws 11 amps of current. Determine the…

A: Given,  Current  i = 11 A Time  t =8 hr = 8×60×60 = 28800s Current is a measure of the flow of…

Q: 2) What is the difference between series connection and parallel connection? Construct a comparison…

A: Difference between the series and parallel connection of the resistance in the circuit.

Q: 2. A copper-nickel alloy called constantan has a resistance of 8.55 X 10 4 mQ at 20.0 °C. What is…

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Q: 2. A voltage V across a resistance R generates a current V I R in amps. A constant voltage of 9…

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Q: 7.) Which of the following theoretical formulas is NOT used within the units identity shown below?…

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Q: 4. Which wire would you want to use in the heating element of an electric kettle? Why? 5. Good…

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Q: 7. What is the equivalent resistance in the circuit shown in the figure? If it is a 7V battery, what…

A: Given data: The potential is V =7 V R1 = 10 ohm R2= 20 ohm R3= 20 ohm R4 = 20 ohm

Q: 8. This graph shows the relationship between current and voltage for an unknown metal. What is the…

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Q: 2) What is the EMF of a battery that has an internal resistance of 0.8 n and a terminal voltage of…

A: Given Data : The terminal voltage of the battery is given as V = 10 V. The internal resistance of…

Q: dissipated

A: Resistance =30 Current = 2 Energy needs to be find out.

Q: 6. The current I in amperes is inversely proportional to the resistance R in ohms. If the current is…

A: Given: The initial current is 30 A. The initial resistance is 3 Ohm. The final resistance is 5 Ohm.

Q: 1) A 100 km long high-tension power line is made of aluminum. It has a conductor that is 2.5 inches…

A: Given data: The length of the power line is L=100 km The diameter is d=2.5 in=0.063 m The potential…

Q: 1. Draw a parallel circuit of three resistors whose resistance are 42, 6N and 122, a 24V battery and…

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Q: 2. What is the equivalent resistance of ttwo NOn resistars and one 5n resistor connected n 4.)…

A: Given: Resistance, R1 = 10 ohm Resistance, R2 = 10 ohm Resistance, R3 = 5 ohm Voltage source, V = 50…

Q: 6. A light bulb having resistance of 100 draws 200Ma current form a battery. a) Find the voltage…

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Q: Lucía, a young woman from Veracruz, uses a hair straightener every morning to straighten it and…

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Q: 3. What potential difference must be applied produce a current of 50-mA? across a 2.5-k2 resistor in…

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Q: ** 10. What is the current through a cold light bulb with a resistance of 2 2 when connected to a…

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Q: 3. A CFL or compact fluorescent lamp uses less energy that its equivalent incandescent bulb. How…

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Q: 9. Sketch the t-V relationship of a sawtooth wave that varies between ground and 5V, with a…

A: Solution

Q: 4.) The SMSAT automotive team is assembling a car for the school, and they are trying to work with…

A: We know,  Power, P = V I where, P is power, V is voltage and I is current. I = P/V  I = 50W/ 24 V =…

Q: In the circuit, a 20-ohm resistor sits inside 115 gg of pure water that is surrounded by insulating…

A: In the circuit, a 20-ohm resistor sits inside 115 gg of pure water that is surrounded by insulating…

Q: 4.What will happen to the resistance of a material if the resistivity changed due to the increase of…

A: Resistance of a wire is given by, R=ρlA

Q: Kirchhoff's Law Can all of the currents going into the junction shown below be positive? Explain.

A: Kirchhoff's junction law :- According to the Kirchhoff's junction law the algebraic sum of all the…

Q: How do voltage and current affect the power output of a light bulb or electric appliance? in 5…

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Q: 5. A lamp having a resistance of 10 N is con- nected across a 15-V battery. a. What is the current…

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Q: A resistor of 5 Ohm is removed and then replaced by another resistor of 10 Ohm. What will happen to…

A: This result shall follow from Ohm's law, which states that V=I x R, ( where temperature and other…

Q: 7. The current, I, measured in amperes, is given by the formula I = where P is the power usage,…

A: Given data :  Current, I= 0.5 ampere  Power , P = 60 watt

Q: 3-What happens to the total resistance in a parallel circuit as more resistors are added in…

A: Given:- 3)What happens to the total resistance in a parallel circuit as more resistors are added in…

Q: What happens to current in other lamps if one lamp in a series circuit burns out? Explain and…

A: In series circuit current is same . if one lamp in a series circuit burns out means current is zero…

Q: Two 60.0 9 resistors are connected in parallel and this parallel arrangement is then connected in…

A: Disclaimer: Since you have asked a question with multipart and there is no particular multiparts…

Q: 4. If you change the resistivity of the resistor, is the effect like changing the length or changing…

A: Solution:  The resistance of any resistor is directly proportional to length and inversely…

Q: 1. You are asked to measure a current with an ammeter with many scales. In what order do you use…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 25-Ω resistor has a voltage difference of 3 V across its leads. (a) What is the current through the…

A: Resistance, R = 25-Ω  Voltage difference, V = 3 V

Q: 5- What is the total resistance of the resistors on the figure ? 2 k 20k 9V 312k 20 k 5k

A: Given The resistance of the first resistor is R1=5 k. The resistance of the second resistor is…

Q: 6) In recent class lectures, we discussed the temperature dependence of the electrical resistivity,…

A: Conductors are those materials that have a positive temperature coefficient. Thus, In conductors,…

Q: 2. I-V graph, has a slope of 8, what is the current when the voltage is 10 V ?

A: Given Data : The slope of the I-V graph is given as m = 8. The voltage is given as V = 10V.

Q: 1. Calculate the output voltage for the circuit shown in figure below. D1 D2 -10V- V. Ge Si R1 2.9k2

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.