4. Which wire would you want to use in the heating element of an electric kettle? Why? 5. Good conductors resist electrical current than poor conductors.

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: 2. What makes one appliance more efficient than another model of the same appliance? 3. Give an…

A: Given : Two questions to answer: 1) What makes one appliance more efficient than another model of…

Q: What makes electricity dangerous. The high current or the high voltage. Explain.

A:

Q: 7. What does a diode do in a circuit?

A: 7. Diode do in a circuit

Q: 20. A device that produces electricity by transforming chemical energy into electrical energy Your…

A:

Q: 6. A circuit has 15 ohms of resistance and 100 amps of current. How much voltage is required for…

A: BY OHMS LAW V=IR here  R=15 ohm I=100 A

Q: A copper transmission cable 34 km long and 19.5 cm in diameter carries a current of 11 A. How much…

A: Length, L=34 km = 34×103 m Current, I=11 A ρ=1.72×10-8  Time, t =9 hours = 9×60×60 =32400 s…

Q: 54.Materials whose electrical properties are in between the conductors and insulators.

A: We know that conductor have huge number of free electron.these free electron helps to flow current…

Q: write 100 words on semi conductors

A:

Q: 2. The lighting needs of a classroom are met by 30 fluorescent lamps, each consuming 80 W of…

A: To solve the given question, we will find the energy consumptions, and then we will find the cost.

Q: 3. The charge passing through a wire is q = (80t + 20) C. What is the current?

A:

Q: 8. To measure small current, the Leads should be connected to A and B C and D A and D FLUKE 79…

A: * To measure small current (of the order of mA), the lead should be connected to A and D. i.e, lead…

Q: 15) How much current is drawn by a 75-Watt light bulb connected to a 120V outlet?

A: Given info Power of light bulb is P = 75 Watt  Outlet voltage V = 120 V We have to determine current…

Q: 9- A steady current of 0 50 A flows through a wire. What is the charge passing through the wire in…

A: Given date current I = 0.50 A and time t = 1 minute. Question charge passing through the wire ?

Q: 2. Find the drift velocity, if the voltage is 4 V, length is 60 cm, area is 2 m, resistance is 5 kQ…

A:

Q: High-voltage power lines are used to transport electricity cross country. These wires are favored…

A: The current flows from a region of high potential to a region of low potential.

Q: 2. WHAT SHOULD BE THE LENGTH AND CROSS-SECTIONAL AREA OF A WIRE FOR IT TO HAVE A RESISTANCE OF 100…

A:

Q: 14. What is the resistance of a circuit with 125V and 30A? 15. What is the current in a 12V circuit…

A: Q.14  Data Given ,  Voltage ( V ) = 125 V , Current ( I ) = 30 A  We have to find Resistance ( R ) =…

Q: 4. A light bulb operating at 110 v draws 1.40 A of current. What is its resistance?

A: Ohm's law is a relationship between the voltage across an element, the current going through the…

Q: Relation between current and voltage.

A: Relation between current and voltage.

Q: 10) A lightning rod electrons from lightning to the ground. Your answer

A: Lightning rods protect homes from lightning that is it prevent buildings from damage that may cause…

Q: 6. Ohm's Law says: a circuit, proportional, voltage, The current, in, directly, proportional, is,…

A: In this question we have to rearrange the statements given. Please give positive feedback if the…

Q: 4. What is the resistance of an immersion heater that increases the temperature of 1.0 kg of water…

A:

Q: 3. If the current flowing in a certain conductor is 40 mA. a. find the total charge in coulomb and…

A: Given I= 40mA = 40×10-3 A  And  t= 1.8 sec.  We know that charge Q= It and Q= ne  Where n= no. Of…

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

A:

Q: 12.5 Coulombs of charge flows through a 5 kilo-ohm resistor in 8 minutes. 1. What is the electric…

A:

Q: 5. What is the main purpose of an electroscope?

A: Note:  According to guidelines , we can answer one question at a time

Q: 4. A conductor has a resistance of 7-N at 0°C. At 20 °C, its temperature coefficient is 0.00333.…

A: For question 4 Given  Resistance of conductor at 0°C R0=7Ω Temperature coefficient at 20°C…

Q: 13.

A: Let the two bodies are electrically neutral before rubbing. Let q1 be the charge accumulated on…

Q: 4. Calculate the resistance of a copper wire with a diameter of 2.5968 mm having a length of 1000 m…

A: Let the wire’s radius is denoted by r and the wire ‘s length is denoted by l.

Q: What is grounding? What effect does it have on a charged conductor? On a charged insulator

A:

Q: 1. Select all of the following that correctly describe what a volt meter and ammeter measure. Select…

A: The voltmeter is a device that is used to measure the potential difference and it is always…

Q: 2. Compare and contrast alternating current (AC) and direct current (DC).

A: Comparison between A.C and D.C

Q: 2, what average current is required to vaporize the water?

A:

Q: 1. An electric bulb draws a current of 0.25 A for 20 minutes. Calculate the amount of electric…

A: Introduction :  In this question we are provided it value of time and current . With these data we…

Q: Which wire is the best conductor of electricity  explain your answer

A: In this question we have to answer which wire is the best conductor of electricity.

Q: 9. Which of the following least effective conductors? a. copper c. steel b. water d. gold

A: least effective conductor amongst the given is b: water .

Q: ow would you go about making electricity with a copper wire, and nothing else?

A: Given:-  About making electricity with a copper wire, and nothing else? Find:- How would you go…

Q: 3. An operating lamp draws a current of 0.50 ampere. How much charge passes through the lamp in 10…

A: 3- Given: Current through operating lamp, i=0.50 A Time, t=10 s To determine charge passes through…

Q: 44.) Which type of battery would you normally not buy for your car?

A: a) A dry cell battery is a battery which contains electrolyte that causes chemical reaction to…

Q: June wants to use a glass rod as an insulator. The rod's diameter is 9 mm and its resistivity at…

A: diameter of rod = 9 mm resistivity = 1×109 ohm-meter Resistance (R) = 9.1×1010 ohm

Q: How do we use conductors

A: When flammable or combustible atmospheres are present, uncontrolled discharges of static electricity…

Q: Briefly describe the difference between charging by friction and temporarily charging by induction.

A:

Q: 4. A conductor has a resistance of 7-0 at 0°C. At 20 °C, its temperature coefficient is 0.00333.…

A:

Q: 4. A conductor is? a. material that current can pass through c. material that current cannot pass…

A: Introduction: A conductor is a material that allows the flowing of charge from one end to another…

Q: 6. Which of the following materials - A, B, C, D-are Ohmic? Circle all that apply. а. А b. В С. С d.…

A: Given Graph between voltage and current is shown in the figure. We have to choose the correct option…

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.