Suppose an indicator light on a DVD player has a resistance of 138 Ω.  How many volts are supplied to operate it, given that 21 mA ( 2.1 × 10–2 A) passes through it?

Q: A person notices a mild shock if the current along a path through the thumb and index finger exceeds…

A: V = IR

Q: The battery of an electronic device has an emf of 1.6V and internal resistance of 1.46ohm. How much…

A: The circuit is as shown in the above figureVoltage of the battery, VB = 1.6 Vinternal resistance, r…

Q: A circuit contains a 47.0-V battery and a single light bulb whose resistance is 232 Q. A second,…

A: a) Calculate the power delivered to a single bulb when there is only one bulb. P=V2RP=(47 V)2232…

Q: A battery of 9V is connected in series with resistors of 0.2Ω, 0.3Ω, 0.4Ω ,0.5Ω and 12 Ω,…

A:

Q: The given problem concerns a high-voltage transmission line. Such lines are made of bare wire; they…

A: Given: length of the wire = 100  km The resistance of the wire = 7 ohm Current in the wire = 200 A…

Q: For a medium-well steak, the FDA recommends steak to be cooked to the temperature of 145 degrees F.…

A: Due to the flow of the current through the circuit, there is some heat that will be produced…

Q: 1. Consider the circuit below. The battery has an emf of & = 30.00 V and an internal resistance of r…

A: According to the guidelines, when a question with multiple subparts is given then only the first…

Q: A bird stands on a dc electric transmission line carrying 2,974 A. The line has 28 ?μ ΩΩ…

A:

Q: A 240-kV power transmission line carrying 5.00 X 102 A is hung from grounded metal towers by ceramic…

A: The equivalent resistance of n number of same resistance connected in parallel is,…

Q: What is the magnitude of the potential difference between points A and B on the circuit, while the…

A: The resistances are 30 Ω and 30 Ω. The voltage across the battery is 12 V. According to Ohm's law,…

Q: the heating element on an electric heater dissipates 4.0 x 10^2 watts of power when connected to a…

A:

Q: 50 ΩΕ 100 ΩΕ 20 ΩΕ +

A:

Q: Batteries are rated in terms of ampere-hours (A-h). For example, a battery that can produce a…

A: Since voltage is pretty much fixed for a battery type due to its internal chemistry (alkaline,…

Q: A person accidentally touches a 120V electric line with one hand while touching a ground wire with…

A: According to Ohm's law current=voltage diiference/resistance=(120-0)V/700 ohm =0.171A=171 mA

Q: Given the circuit and currents i1=0.026A, i2=-0.0142A, and i3=0.0154, Find change in voltage from…

A: Electric Circuit is given in the question.

Q: What is the minimum number of 63 −Ω resistors that must be connected in parallel to produce an…

A:

Q: A toaster is rated as drawing 850 W of power at 120 V. The cord of the toaster is connected to an…

A:

Q: The label on a portable radio recommends the use of rechargeable nickel-cadmium cells (NiCads),…

A:

Q: What is the resistance (in MΩ) of the path?

A:

Q: Two resistors, 60.7 and 68.3Ω, are connected in parallel. The current through the 68.3-Ω resistor is…

A: Given value--- Two resistors, 60.7 and 68.3Ω, are connected in parallel.  The current through the…

Q: Find the equivalent resistance between points A and B in the drawing. Assume R1 = 2.70 Q, R2 = 6.10…

A: R1 = 2.7 ohm R2 = 6.10 ohm R3 = 2.60 ohm R4 = 3.90 ohm R5 = 3.80 ohm R6 = 2.90 ohm R7 = 4.30 ohm

Q: In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome that…

A:

Q: What power is dissipated by a 200 ΩΩ resistor through which .050 A flows?   Group of answer choices…

A: Given, Resistance of resistor =200Ωcurrect in resistor =0.050 Awe have to calculate the power…

Q: 18. What is the power output (in watts) of the battery in the circuit below? 40.0 Ω 10.0 Ω wwww B…

A:

Q: An electrical heating coil is immersed in 3.52kg of water at 22C. The coil, which has a resistance…

A: The heat produced by electric resistance is given by = (V2/*R)*t Heat given to te water = m *s*∆T…

Q: Assume you have a battery of emf  = 12 V and 4 identical light bulbs, each having constant…

A:

Q: Two resistors, 46.2 and 56.6Ω, are connected in parallel. The current through the 56.6-Ω resistor is…

A: In parallel combination voltage across each resistance remains same.

Q: What is the power (in W) dissipated by the 9 Ω resistor in this electric circuit? 18 Ω 9 Ω 32 V X…

A: Solution: Given: R1 = resistance of resistor 1 = 18 Ω R2 = resistance of resistor 2 = 9 Ω R3 =…

Q: The ammeter shown reads 3.0 A. Find I1 , I2 , and ε.

A: Using kirchoff's law for the given circuit diagram,

Q: What is the resistance (in Ω) of a 9.00 ✕ 102 Ω, a 2.90 kΩ, and 5.00 kΩ resistor connected in…

A: Given data:  R1 = 9.00 ×102 Ω = 900 Ω R2 = 2.90 kΩ = 2900 Ω R3 = 5.00 kΩ = 5000 Ω Resistors are…

Q: (a) What is the resistance (in kΩ) of a 7.00 ✕ 102 Ω, a 2.70 kΩ, and 5.00 kΩ resistor connected in…

A:

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.