A Fuse is used in mains electric supply as a safety devices. Which one of the following statements about the fuse is correct?   A) It is connected in parallel with the main switch B) It is made mainly from silver alloys C) It must have a low melting point D) It must have a very high resistance

Q: A battery has an emf of 16.0 V. The terminal voltage of the battery is 11.6 V when it is delivering…

A: Given ,EMF of battery = 16V Terminal voltage of battery =11.6V Power delivered to external resistor…

Q: An electrical circuit has a 8.85-V battery wired to two resistors, 1.19 Ohms and 8.46 Ohms, in…

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Q: An electric heater is rated at 2.00 x 103 w, a toaster at 500 W, and a electric grill at 1.25 x 103…

A: Pheater=2000WPtoaster=500WPgrill=1250WV=120-V we know P=V2R⇒R=V2P Rheater=12022000=7.2…

Q: A heater and a lamp are connected in parallel to a 120 volt source.  If the heater draws 8 amps and…

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Q: circuit consists of 3 branches. The first branch has a 20.0V battery and a 4.6Ω resistor. The second…

A: Given: For first branch - Voltage = 20 v Resistance, R1 = 4.6 ohm For Second branch- Resistance, R2…

Q: A student in the laboratory connects a 15 Ω resistor, a 25 Ω resistor, and a 41 Ω resistor in series…

A: Calculate the equivalent resistance in the circuit. Req=R1+R2+R3Req=15 Ω+25 Ω+41 ΩReq=81 Ω

Q: Three resistors of 2.0 Ω, 3.0 Ω, and 4.0 Ω are connected in a) series b) parallel. Find the…

A: The equivalent resistance of resistors in series is given as Rs=R1+R2+R3+...…

Q: Two identical resistors can be connected in series to a battery or in parallel. In which…

A: Given: two identical resistors which can be connected in series to a battery or in parallel   To be…

Q: Kirchhoff's Junction Rule states that the sum of the currents entering any junction in a circuit…

A: Kirchhoff's Junction rule : It states that the sum of the current entering any junction in a circuit…

Q: Which of the following options correctly describes the relationship between the resistance of a long…

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Q: circuit with a battery, a 9 Ω resistor, a 18 Ω resistor, and a 24 Ω resistor in parallel. The total…

A: Equivalent resistance in parallel  1/R = 1/R1 + 1/R2 + 1/R3

Q: During an electricity investigation, a student stated, “When the voltage increases current…

A: Given data:  When the voltage increases current increases Required: The equation that describes the…

Q: Which statements are true? a) A voltmeter must be placed in parallel with a resistor to measure the…

A: The objective of the question is to identify the correct statements about the use and…

Q: Three identical resistors are connected to a 6V battery and a switch as shown. When the switch is…

A: I have given a detailed explanation with proof.  Please try to understand your own.  Hope it will…

Q: When resistors with different resistances are connected in series, which of the following must be…

A: When resistors are connected in series current flowing through them will be same but have different…

Q: An electrical circuit has a 7.42-V battery wired to two resistors, 3.94 Ohms and 8.65 Ohms, in…

A: The effective resistance is, 1Reff=1R1+1R2+.....Therefore,1Reff=13.94ohms+18.65ohmsReff=2.70ohms

Q: Two appliances are connected in parallel to a 120-V battery and draw currents I₁ = 2.0 A and I₂ =…

A: I1 = 2 A I2 = 3.5 A Vbattery = 120 volts

Q: When electric current in a circuit reaches a junction, it divides. What is the key physics that…

A: The 2nd law of thermodynamics give the information of the quality of the energy. Newtons third law…

Q: 17. Examine the following circuit diagram showing four resistors connected to a battery. R₁=100 www…

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Q: 20 202 10Ω Find the total resistance of the circuit shown above. F 6.7 ohms G 10 ohms H 30 ohms 35…

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Q: The diagram represents an electric circuit consisting of a 12-volt battery, a 3.0-ohm resistor, R1,…

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Q: 30 Calculate the number of atoms per unit area in (100), (110) and (111) plane of a bcc crystal with…

A: Solution:-Given thatPlanes-(100), (110) & (111)BCC CrystalLattice Parameter (a)=2.5 A=2.5×10-10…

Q: A circuit breaker or fuse is connected: (a) in series with the live wire (b) in parallel with the…

A: (a) In series with the live wire

Q: An electrical circuit has a 4.00-V battery wired to two resistors, 2.06 Ohms and 5.96 Ohms, in…

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Q: Four 8.0-KW resistors are connected in parallel. What is their equivalent resistance? 0.054 KW О.13…

A: Given  Resistance R1=R2=R3=R4=8kW

Q: A 6-volt series circuit consists of two resistors. Resistor A has three times the resistance as…

A: Given data: The potential across the circuit is V=6 V The ammeter's current is I=160 mA The…

Q: 3. In the figure below the resistors have resistances of R1 = 225 N, R2 = 475 N, and R3 = 650 %3D…

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Q: If a circuit contains one 20 2 resistor and still generates 0.50 A of current, what is the voltage…

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Q: According to ohm's law, which of the following is true?       A) The current flowing through a wire…

A: According to the Ohm's law, when the temperature is constant, the current flowing through the…

Q: Electrical appliances are connected in series because appliances have different current ratings *…

A: The answers is given below

Q: A hair dryer is designed to use 800W of power when connected to a 120V outlet. A) find the current…

A: Power of hair dryer = 800 Voltage = 120 V

Q: Which of the following wires would have the LOWEST resistance? (Hint: Remember to use the analogy…

A: In this question given the lowest resistance-

Q: A3 ohm and a 6 ohm resistor are connected to a 1.5 V battery in parallel. What is the total current…

A: Given, R1=3 ohmR2=6 ohmR1∥R2R=R1R2R1+R2=3×63+6=2 ohm V=1.5 V

Q: Two resistors (shown on the graph) are connected in parallel. Calculate their equivalent resistance.…

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Q: In a simple electric circuit, a 110-volt electric heater draws 2.0 amperes of current. What is the…

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Q: An electrical circuit has a 5.94-V battery wired to two resistors, 1.44 Ohms and 5.85 Ohms, in…

A: An electrical circuit has a V = 5.94-V battery wired to two resistors, R1 = 1.44 Ohms and R2 = 5.85…

Q: A flashlight bulb is connected to a dry cell of voltage 4.50 V. It draws 15.0 mA (1000 mA = 1 A).…

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Q: The following circuit consists of identical resistors whose resistance is 5.0 Q connected to a 40 V…

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Q: What is the resistance of the following circuit measured between points a and b? R1 R2 5k 5k R5 a 1k…

A: Given values: R1=5 kR2=5 kR3=2 kR4=2 kR5=1 k

Q: A 540 W electric heater is designed to operate at 120 V. What is its resistance? A) 26.7 Ω       B)…

A: (A) 26.7 ohm

Q: How does increasing the number of resistors in a parallel branch change the total resistance of the…

A: Given that How does increasing the number of resistors in a parallel branch change the total…

Q: What current will a 3.0 V battery cause to flow? The resistance of the battery is 14.0 Ω.  A) 4.7 A…

A: Given: Voltage across the battery V = 3 V Resistance of the battery R = 14.0 Ω