56 : A potentiometer wire has a length of 1.5 m and a resistance of 10 N. It is connected in series with a cell of e.m.f. 4 volt and internal resistance 5 N. Calculate the potential drop per unit length of the wire.
Q: 8. There is a potential difference of V = 20 V across a resistor with R= 50 N. What is the current…
A: Given data: Voltage, V = 20V Resistor, R = 50Ω
Q: 001 If the emf of a battery is 21 V and a current of 44 A is measured when the battery is shorted,…
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Q: A battery with internal resistance r= 0.16ohm and emf ε= 404 V is connected to the ends of resistors…
A: Internal resistance , r = 0.16 Ω EMF , e = 404 V R1 = 4 Ω R2 = 12 Ω To find = Total heat energy…
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Q: consider a portable electric blanket that runs on a 6 V battery. If you use copper wire with a 0.5…
A: Given data: Battery Voltage (V) = 6 V Wire Diameter (D) = 0.5 mm = 0.5×10-3 m Power (P) = 20 W…
Q: 1. Four identical light bulbs, each with a resistance of 20 n, are connected in series (circuit A)…
A: Given four bulb each has resistance R=20Ω Connected with source voltage E=12V a) Since the four bulb…
Q: 13- At 20 °C, a copper wire has a diameter of 4 mm, a length of 20m, a resistivity of 1.7×10-8 2m…
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Q: 8-A 5.0 n resistance is required to be made from a copper wire with a cross section of 0.1 mm. The…
A: R = 5nΩ; Crross section = 0.1mm; V = 116 V; ρCu = 1.70 x 10-8 Ω.m
Q: 1. Wires A and B are made of the same material and have the same length. Howeve the diameter of wire…
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Q: 48.30 53.20 26.30 130 77.3V 53.30 0687
A: Using mesh analysisThe 48.3 ohm and 53.2 ohm are in series.Rs=48.3+53.2 =101.5 ohmThe 13 ohm, 53.3…
Q: 7. Find the electric potential of a charge q with 491 nC and distance of 200 cm 8. What Fuse should…
A: The electric potential is given by= kq¹/r Where r =distance of point from the charge q¹ U
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Q: 1. In the following infinite resistor system, show that the equivalent resistance between points A…
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Q: 4. The electrical resistance of human body in about 50 ko on average. If a person inadvertently…
A: Internal resistance (r)=2000 ohmsElectrical resistance of human body=50000 ohmsPower supply=20000 V
Q: 1. f both the diameter of a wire and its length are quadrupled, what will happen to its resistance?…
A: Formula of resistance: R=ρLA=ρLπd24 ∴ R∝Ld2
Q: 4. Wire A and B are made of the same material and have the same length. However, the diameter of…
A: Given : da = 3 db Ra = 12 ohm
Q: 1. Resistance in metal wire arises because: a. The electrons are moving randomly b. There are…
A: 1. When electrons move through the metal wire some electrons collide with atoms, other electrons, or…
Q: 3. A circuit is shown in the diagram given below. 6 V 12 V The potential difference across the…
A: Given data: Two resistors are connected in series R1 = 6 Ω and R2 = R Voltage across resistors V1 =…
Q: Two wires, A and B, are made from the same material. The length of A is twice the length of B, and…
A: The resistance is given by the formula.R=ρlAWhere, l is length of the conductorA is cross section…
Q: - 9. Assuming the two resistors are identical, the value of I3 in the following circuit is V₁ = 10.0…
A: Solution:-Given that
Q: 69 : A cell e.m.f. 2 volt and negligible internal resistance is connected to potentiometer wire of…
A: To Find: Potential gradient VL Given Data: E.m.f. of cell (E) = 2 V Length of potentiometer wire (L)…
Q: A human being can be electrocuted if a current as small as 50 mA passes near the heart. An…
A: Given a human being can be electrocuted if a current as small as 50 mA passes near the heart. An…
Q: 17. A capacitor is connected to a 20 V battery through a resistance of 102. It is found that the…
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Q: 2. A wire has a diameter of 10mm, length 50m and resistivity 3.8 x10-8Qm. What is the resistance of…
A: 2 3:
Q: 6. Consider the circuit shown below. U9 U8 a. Calculate the equivalent resistance of the system. b.…
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Q: Two wires of the same material and with the same length have different diameters. Wire A has twice…
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Q: 87. The capacitor in the flash of a disposable camera has a value of 160 µF. What is the resistance…
A: for RC series circuit charging capacitor Q=Q0 (1-e-t/RC ) where Q0 =maximum charge which can be…
Q: A wire with a temperature coefficient of resistance (a = 0.0075/°C) has a resistance of 6.28 2 at…
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Q: 3. A total resistance of 3 ohm must be produced by combining an unknown resistor R with a 12 ohm…
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Q: C A m M B
A: The pulley system consists on mass A and B mass A, m, MA=4 Kg mass B, MB=6 Kg
Q: 4. A conductor of radius r, length and resistivity phas resistance R. It is melted down and formed…
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Q: 5. Consider the circuit shown below, with four different resistors. B C: If the electric potential…
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Q: capacitor? * Zero Low О High 4. Digital multi-meter is used for measuring a.c. current and voltage.…
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Q: -33: When a battery is connected to the resistance of 102 the current in the circuit is 0.12A. The…
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Q: 4. A battery has an EMF of 24.0 V and an internal resistance of 'r'. Its terminals are connected to…
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Q: Two batteries, e = 6 V, 0.25 N, and ez = 12 v, 0.5 N are connected series-opposing. An external…
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Q: Rank the currents through the resistors and the battery shown in the circuit below. 10 v -41+ A 252…
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Q: 1. You have three 12 N resistors. Draw diagrams showing how you could arrange all three so that…
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Q: 2. For the given circuit, R. = 100 92, R₂ = R₁ = 50 92, and R4 25 2 a) Find the equivalent…
A: The resistances are given as follows R1=100Ω R2=R3=50Ω and R4=25Ω Lastly, the voltage source is V=12…
Q: 7. Lightning discharges and lightning occur when charges are separated at different heights in the…
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Q: 59 : A potentiometer wire has a length of 4 m and a resistance of 10 Q. The wire is connected to a…
A: To Find: 1) Potential drop per unit length 2) Balancing length Given Data: L=4 m,R=10 ΩE=4 Vr=2…
Q: What is the resistance (in units of 2) of a wire made of a material with a resistivity of 3.2 x 100.…
A:
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