What is the resistance (in ohm) of the light bulb if it glows with full brightness when connected to the battery? 12.5 watts d a 2.50 V

Q: An electric heater is constructed by applying a potential difference of 121.2V across a wire with a…

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Q: How many ohms of resistance are present in a light bulb that has 6A at 120 volts? O 10 0 O 20 0 O…

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Q: A flash unit for a camera has a capacitance of 1700 μF. What resistance is needed in this RC circuit…

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Q: A 240V household appliance has an electrical resistance of 209 Ohms. How much energy will it use in…

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Q: The potential difference across a resistor in a particular electric circuit is 360 V. The current…

A: Given data: Potential difference ∆V=360 V Current (I) = 18 A Need to determine the resistance of the…

Q: How many volts are supplied to operate an indicator light on a DVD player that has a resistance of…

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Q: The resistance of an electric heater is  70 Ω  when connected to 120 V. How much energy does it use…

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Q: If you made a plot of current versus voltage and calculated a slope of (0.00378 ± 0.000218) A/N.…

A: According to Ohm's law, V=IR , where V is the voltage , I is current  and R is resistance.

Q: Of what material is a wire made, if it is 25.0 m long with a 0.100 mm diameter and has a resistance…

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Q: A 1.5 Volt (V) Battery is charged completely. If this battery attached to the terminals an of small…

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Q: A lead rod has a length of 30.00 cm and a resistance of 5.00 μΩ . What is the radius of the rod?

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Q: What is the new resistance in a wire at 50 degree C when initial resistance is 20 ohms at 30 degree…

A: Resistance of any electrical device is the ratio of given voltage to the current flowing through…

Q: In the circuit shown, find the power used by the 80 ohm resistor R=600 O 0.41 W 0.30 W O 0.52 W 0.63…

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

Q: Given the circuit below, determine the magnitude of the current through the 40-volt source. 10 ohms…

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Q: How much work W does the battery connected to the 21.0-ohm resistor perform in one minute? Express…

A: emf = E = 12 Volts internal resistance = r = 3 ohms resistance = R = 21 ohms

Q: An electric heater is constructed by applying a potential difference of 112V across a wire with a…

A: Given : Potential difference = 112 V             Resistance = 15 Ω

Q: Calculate the current through each resistor in the figure if each resistance R=1.38 kn and V= 12.0 V…

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Q: An electric heater carries a current of 13.5 A when operating ata voltage of 1.20 x 102 V. What is…

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Q: What is the resistance (R) of the conductor in the circuit? 0.4V 1.5V ( 1.5V 1.5V 1.5V current =…

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Q: What is the voltage across the terminals of a 38 ohms resistor that has 0.082 A of current flowing…

A: Given data :           Current = i            Resistance = R     To find :                Voltage

Q: What is the resistance of a 20.0-m-long piece of 12- gauge copper wire having a 2.05 mm diameter?…

A: Given data: Length (L) = 20.0 m Diameter (D) = 2.05 mm = 2.05×10-3 m Resistivity (ρ) = 1.68×10-8 Ω…

Q: Calculate the diameter of a 0.04-cm length of tungsten filament in a small lightbulb if its…

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Q: What is the exact value of this resistor? R= ohms Voltage 120.00 V Current 3.12 A

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Q: A platinum RTD PT100 measures 100 Q at 0 °C and 139.1 Q at 100 °C. Calculate the resistance of the…

A: If R1 and R2 are  the measured resistances at temperature T10Cand T20C respectively, then their…

Q: If an aluminum power line has a resistance of 80 at 30°C, what is its resistance when cold air…

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Q: 8. What is the equivalent resistance between points A and B of the network shown in the figure? 12Ω…

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Q: A light bulb used in a computer projector has a resistance of 800 Omhs. What is the current through…

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Q: The resistance of an electric heater is  70 Ω  when connected to 120 V. How much energy does it use…

A: Resistance of electric heater (R) = 70 Ω Voltage (V) = 120 V Time (t) = 45 min = 45×60 sec = 2700…

Q: A flash unit for a camera has a capacitance of 1300 µF. What resistance is needed in this RC circuit…

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Q: What is the voltage across the terminals of a 22 ohms resistor that has 0•064 A of current flowing…

A: Given, Resistance of the resistor, R = 22 ohms current flowing through it, I = 0.064 A

Q: With the switch open, the voltmeter reads 1.700 V. When it is closed, so that current flows through…

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Q: A coil of copper wire has a resistance of 62 Ω at room temperature of 24 °C. What will be its…

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Q: A 100-W lightbulb has a resistance of about 15Ω when cold (25 ̊C) and 140Ω when hot. Estimate the…

A: Given : P = 100 W Ro = 15Ω To = 25°C R = 140Ω α=0.0045/°C.

Q: A light bulb is wired in series with a 118-Ω resistor, and they are connected across a 120.0-V…

A: Given: The resistance in series with bulb is 118 Ohm. The supply voltage is 120 V. The power across…

Q: Your laptop has a power rating of 100 W. If your laptop represents a resistance of 1.91 kQ, what is…

A: Given data:  Power (P) = 100 W Resistance (R) = 1.91 kΩ = 1910 Ω Required: The maximum current (I)

Q: Standard automobile batteries have six lead-acid cells in series, creating a total emf of 12.0 V.…

A: The expression for the required individual emf of lead-acid cell,

Q: How many volts are supplied to operate an indicator light on a DVD player that has a resistance of…

A: By the ohm's law, the voltage supplied is the product of current flowing through light and…

Q: An electric heater is constructed by applying a potential difference of 127.2V across a wire with a…

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Q: 15 mm diameter tungsten filament in a light bulb is to have a resistance of 0.132 Q at 20. m

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Q: consider a portable electric blanket that runs on a 4,5 V battery. ıf you use copper wire with a…

A: The resistance of the wire can be obtained as P=V2RR=V2P=4.5V220W=1.0125Ω

Q: The resistance of an electric heater is 20N when connected to 120 V. How much energy does it use…

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Q: What is the value of this resistor, in ohms (0)? Resistor (R) 12 volt V battery A Voltmeter…

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Q: The current through the 4 N resistor in the portion of the circuit given is ( ) 10 V ww

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Q: What is the % conversion efficiency of a battery charger that inputs 22 W and outputs 1100 mA at 12…

A: The output power is Pout=VI=12 V1.1 A=13.2 W

Q: In an experiment on muscle a voltage of 6.64 V is applied, resulting in a current of 57.1 mA.  What…

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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.