A real emf device has Zero internal resistance Definite internal resistance Indefinite internal resistance None of these
Q: An electric heater is constructed by applying a potential difference of 121.2V across a wire with a…
A:
Q: Why would batteries with high current capacity have a lower internal resistance than batteries with…
A: We need to explain the reason behind batteries with high current capacities have a lower internal…
Q: How can three resistors of resistances 2 Ω, 3 Ω, and 6 Ω be connected to give a total resistance of…
A:
Q: How does the resistance of a metallic wire depend on its
A: Given; Explain with reason, How does the resistance of a metallic wire depends on its temperature.
Q: You wish to measure both the current through and the potential difference across some component of a…
A: Measurement using voltmeter - Voltmeter is connected in parallel with the component of the circuit.…
Q: In the opposite figure, three resistors, X and Y, have the same value. Which of the following is…
A: Solution: As per the given statement,
Q: Three resistors, each having a resistance of 30 0, are connected in parallel with each other. What…
A:
Q: Four unequal resistors are connected in series with each other. Which one of the following…
A: Given : Number of resistors = 4 Resistors are connected in series
Q: A 9V battery is connected across a potentiometer (device with variable resistance). As the…
A: We have , V=IR Where V = voltage I = Current R = resistance
Q: The voltage acioss the circuit element X shown in Figure will be, if it is a 100 k resistor 20k R2…
A: Given: The resistances in the circuit are. R1=18 kΩR2=20 kΩR3=45 kΩR4=20 kΩRx=100 kΩ The supply…
Q: A person notices a mild shock if the current along a path through the thumb and index finger exceeds…
A: We know, ∆Vmax=ImaxR
Q: A 30-ohm resistor and a 60-ohm resistor are connected as shown above to a battery of Voltage of 20…
A: Given that, 30 ohms and 60 ohms are connected in parallel. The voltage of the battery = 20 V The…
Q: A household circuit operating at 240 V has four appliances connected in Parallel. The resistances of…
A:
Q: The sketch shows a circuit with two resistors and a battery. Which of the following statements is…
A: Given,R1 and R2 are parallel o each other,1) The potential drop across R1V1 = I1R1The potential drop…
Q: In the circuit shown, the battery has EMF of c=32 V. At what rate is thermal energy being generated…
A:
Q: What is the total power delivered by the power supply shown in the circuit below? 2 kQ - 10 V>4 kQ>…
A: Solution:Consider the given circuit:
Q: Two resistors, A and B, are connected in a series circuit with a battery. The resistanceof A is…
A: Free electrons can flow through a conductors causing electrical current. When electrons flows…
Q: Two resistances of 10Ω and 15Ωrespectively are connected in parallel. The two are then connected in…
A:
Q: Is it possible to arrange two resistors so that the equivalent resistance is smaller than the…
A:
Q: May two conductors each of the same material and equal volume have different resistances? Explain…
A:
Q: In a given physics lab, you are asked to build a circuit with a resistance of 100 Ohms, but all you…
A:
Q: 4) A battery with unknown emf (e) and internal resistance (r) is connected 7 puan to a circuit that…
A: 0.5 ohm
Q: Why is it not necessary to connect a voltage source (like a cell or battery) across a resistor when…
A: INTRODUCTION Resistance is the property of material.it is opposes the flow of current in a…
Q: Some devices often used in bathrooms, such as hairdryers, often have safety messages saying “Do not…
A: An electrical device is used with a dry hand.
Q: you are trying to reduce the resistance in a branch of a circuit from 110 omega to 80 omega. You add…
A: To reduce a resistance R Ω to a lower value R' Ω one need to connect a resistance r Ω parallel to R…
Q: If doubling the voltage across a resistor doubles the current through the resistor then the resistor…
A: Answer :- the resistor value did not change If doubling the voltage across a resistor doubles the…
Q: 9. (A) Consider the circuit in Figure on the right and assume the battery has no internal…
A: Dear student In a RC circuit, just after the switch is closed, the capacitor doesn't get any charge…
Q: The terminal voltage of a battery falls from 12v to 10v when an 8-ohm resistor is connected across…
A: Given data: The battery emf (ε) = 12 V Terminal voltage (V) = 10 V External resistance (R) = 8 Ω…
Q: High-voltage power supplies are sometimes designed intentionally to have rather large internal…
A: Why is such a power supply with a large internal resistance safer than a supply with the same…
Step by step
Solved in 2 steps
