1. How does resistance change if the length of the wire is increased? a. no change b. decreased c. increased d. cannot be determined

Q: 2. Consider a watermelon that has side lengths x = 4 cm, y = 8.7 cm and z=6.2 cm. (x, Y7) y a)…

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Q: A device operating at a potential difference of 1.5 volts draws a current of 0.20 ampere. How much…

A: Given Data: The potential difference is: V=1.5 V The current in the circuit is: I=0.20 A The time…

Q: 1. What is the difference between accuracy and precision?

A: As per guidelines, first question (#1) has been answered. Accuracy refers to the closeness of…

Q: 4. Use Kirchhoff's junction and loop rules to solve for Iı, I2, and I3 in the following circuit. B A…

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Q: Resistors in series or in parallel can be treated as a single “equivalent resistor”By using…

A: Given data: Resistance of each resistor is R Circuit diagram

Q: 7. Which of the follow a. Silver b. Titanium c. Plastic Bottle d. Wood 8. Which of the follow a.…

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Q: 7. Observe the circuit in Fig. 7, which material would you use to fill the gap to complete the…

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Q: 5. What is the total circuit resistance when resistive elements of 5, 10, 15, and 20 connected in…

A: Given:- R1=5 ΩR2= 10 ΩR3=15 ΩR4= 20 Ω The current in the circuit I = 7 A  Find:- 1) Total circuit…

Q: A 30W bulb and a 60W bulb are supplied in series. a. The two bulbs draw the same current. b. The…

A: In a series circuit, the current through each of the elements is the same.

Q: Kirchoff's rules state "The algebraic sum of changes in potential:   a. around any closed loop must…

A: Kirchhoff gave two laws ,first law is based on conservation of charge while second law is based on…

Q: 3. Two circuits present the same resistance to the current. In one circuit the battery causing the…

A: Answer:-  Given  Circuit one :-  Potential or Voltage (V) = 9.0 V  Current (I) = 3.0 A  Then…

Q: A 502 resistor is wired in series with a 100Q resistor. The two are connected to a 10V battery pack.…

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Q: 2. A DC circuit is pictured. Assume the battery and ammeter are ideal. The switch closes at time…

A: Given, Resistance, R=53.2kΩR=53.2×103Ω Capacitance, C=31.7μFC=31.7×10-6F Emf, ε=10V The relaxation…

Q: À Galvanometer has an internal resistance of 120 ohm with a maximum allowed current of 250 µA. If ou…

A: The expression to calculate shunt resistance is S=IgGI-Ig

Q: Two resistors are connected to each other in series. Which of the following is true? A. The…

A: Required  The correct statement.

Q: 3. Using Kirchhoff's Voltage Law, calculate IT, Iı, and I2 for the circuit shown in Figure 3. R2 =4…

A: Given: The emf in the circuit is E = 45 V The value of resistance in the circuit is

Q: When the cross-sectional area of a conducting wire is doubled while its length is cut in half, the…

A: Write the expression for the resistance. R=ρLA Here, ρ is the resistivity, L is the length, and A is…

Q: 2. Is it possible for a thick wire to have a higher resistance than a thin wire if the two are made…

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Q: A person gains weight by adding fat—and therefore adding girth—to his body and his limbs, with the…

A: A person gains weight

Q: What happens when you add a second bulb to a series circuit? a. The second bulb will be as bright…

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Q: A Clamper circuit must have O a. diode O b. capacitor O c. all of these O d. a dc source O e.…

A: A clamper circuit must have a capacitor,diode and resistive element. The magnitude R (resistance)…

Q: Why is an electromotive force not a “force”? Justify your answer.

A: Electromotive force is the potential difference between the terminals of the cell when no current is…

Q: A. Explain how lightning is produced and the mechanism of lightning rods. B. True or False…

A: Let us solve both the questions part. The first part is to study the mechanism of how lightning is…

Q: 9. A silver block (resistivity at 20°C of 1.59x10-8 Qm) is hooked t a power supply (not in the…

A: Given: resistivity ρ = 1.59*10-8 Ωm length l = 44cm = 0.44m width w = 13 cm =0.13 m height h = 21cm…

Q: 12. Although to a very small extent, even the proper use of an ammeter has an effect on a circuit.…

A: Let the resistance of a resistor = RLet the resistance of ammeter = R' Let the voltage of the…

Q: 28. What voltage would cause a current of 0.5 amps in a circuit that has a resistance of 24 ohms? 6…

A: Given data The current in a circuit is given as I = 0.5 A. The resistance is given as R = 24 Ω.…

Q: 1. Determine the currents in the various branches of the electrical network. The units of current…

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Q: Assume the wires below are made of the same material and have the same cross section. Which wire…

A: Given information :- Here we are given four same materials whose area of cross-section is same but…

Q: 1. The resistance of a 200-W light bulb, which is operated by a 110-V dc source, is about a) 60 2 b.…

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Q: In household wiring, usually 12-gauge copper wire (diameter 12 mm) is used. A light bulb is…

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Q: 8. What circuits has two or more loads but current flows through a single conducting path. a.…

A: We are allowed to give the explanation of first question only which is given below.  Please repost…

Q: 12. The resistance in a carbon filament lamp. B. doubled C. increases D. remains the same A.…

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Q: what is the value of a resistor color coded as red-orange-black-silver? 2. you can produce an…

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Q: period 1. Current is measured in amperes (A). Which of the following units is equivalent to an…

A: 1) Ampere is the unit of current & current is the charge flowing per unit time. So option b-…

Q: 25. What is NOT an advantage to using a parallel circuit? a. They have components that get an equal…

A: In parallel circuit one end of all resistors are connected at same point and other ends are…

Q: 3. A central air conditioner in a typical American home operates on a 220V circuit (higher voltage…

A: This question is from current electricity.

Q: The circuit contains four resistors and an ideal battery.  a. What is the equivalent resistance of…

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Q: D.Geory Un 10. A galvanometer has a resistance of 10 n and deflects full scale for a current of 100…

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Q: What is the name of the circuit given below? PR1 v 5.9976V PR2 v 5.9976V R1 1k2 V1 D1 7.5V 3 1kHz 0°…

A: Clipper circuit contains diode in series with resistance and input voltage while clamper circuit…

Q: 11. A typical car seat heater produces 10 W of heat using a 0.25 mm diameter steel wire connected to…

A: The resistance is,

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.