A potentiometer wire has length 5 m; it is connected to a battery. For a certain cell, the null point is at 250 cm, if the length of potentiometer wire is increased by 1 m, where will be the new position of the null point?

Q: A typical cell phone battery supplies a 1.5 V potential. If your phone battery supplies the power P,…

A: The power P supplied by a battery is given by, P = VI where, V is the potential of the battery, and…

Q: Formal Solution: A long straight wire (with negligible resistance) is connected to a 10.0V power…

A:

Q: The resistances in Figure (a) and Figure (b) are all 9.0 0, and the batteries are ideal 38 V…

A:

Q: A radioactive sample decays with an average-life of 20 ms. A capacitor of capacitance 100 uF is…

A:

Q: Blood contains charges and these charges are free to move. Moreover, The membranes of all the…

A: Given: R1=836 ΩR2=306 ΩC=460 μF=460×10-6 FV=40 V

Q: Ex 69 A cell e.m.f. 2 volt and negligible internal is connected to resistance potentiometer wire of…

A: To find-Potential gradient VL=?Given-Emf of cell (E)=2 VLength of potentiometer wire (L)=4…

Q: Problems 1. Evaluate measurement error A, (%) due to the loading effect of a voltmeter with the…

A:

Q: For the ladder network in the given figure, find /and Reg. Assume V= 19 V. 10 ww ww V 4Ω 22 eq The…

A:

Q: How long does it take the charge to reach 63% of its final value if a 10 microfarad capacitor is…

A:

Q: and the current is given by +|1| (a) Show that the potential difference across the battery is AV = E…

A:

Q: Dry air is a pretty decent insulator; it has a very high resistivity of 3 x 105 2 · m. Consider a…

A: 10. Given: Side of square plate is a=15 cm=15×10-2 m. So, the area of plate is: A=a2A=15×10-2…

Q: A capacitor with C = 5 uf is charged with a potential difference of 500v. Now at t = 0 you…

A:

Q: The voltmeter in Fig. Q1(c) has a lead-to-lead resistance of 10 MS2. Its output for this measurement…

A: Given that: Vout=0.8889 V

Q: Ex. 60: A potentiometer wire of length 10 m and resistance 9N is connected to a battery of e.m.f.…

A: To find-(1) Potential gradient along the wire VL=?(2) Balancing length for cell of emf 1.08…

Q: Car batteries are often rated in ampere-hours. Does this information designate theamount of (a)…

A: One ampere-hour is 1C/s * 3600s= 3 600 coulombs.

Q: You measure a voltage with a multimeter, and the digital display has a constant reading of 9.0 V…

A:

Q: For problem 36 find the magnitude of the current through R1 in amps if the battery voltage E1 is…

A:

Q: A potentiometer wire has a length 2 m and resistance of 102. It is connected in series with a…

A: To find-Potential gradient VL=?Given-Length of potentiometer wire (L)=2 mResistance of wire (R)=10…

Q: Given the equation V = Voe-(7.7x10-2)t, at what time will the voltage drop by its criginal value?…

A:

Q: Given two batteries: one with voltage V and internal resistance r₁; another with also voltage V and…

A: Both batteries are with voltage V and their internal resistance are r1  and r2  .These are connected…

Q: (1) (a) Consider the circuit below. Point b is grounded(potential=0). Determine the potential at a.…

A:

Q: The resistances in Figure (a) and Figure (b) are all 8.9 02, and the batteries are ideal 39 V…

A: A. Change in the electric potential when switch is open is 19.5v B.  Change in the electric…

Q: How many time constants must elapse if an initially charged capacitor is to discharge 90% of its…

A:

Q: Chapter 27, Problem 076 GO In the figure the ideal batteries have emfs &₁ = 18.5 V, E2 = 9.23 V, and…

A:

Q: The resistances in Figure (a) and Figure (b) are all 6.8 Q, and the batteries are ideal 23 V…

A: In this question we have to find the change in electric potential across the given circuits. Please…

Q: AV where e, is the permittivity of free space, L is a length, AV is A quantity X is given by E, L-…

A:

Q: In measuring a voltage, a voltmeter uses some current from the circuit. Consequently, the voltage…

A:

Q: Cell phone batteries are rated in units of mAh, or milliampere-hours. (a) What quantity does a mAh…

A: (a) The mAh means milliampere-hour and it defines the current flowing over time. It is a unit that…

Q: In the circuit in the figure, two identical parallel metallic plates, with identical etallic arc It…

A:

Q: The ideal battery in Figure (a) has emf 8 -6.2 V. Plot 1 in Figure (b) gives the electric potential…

A:

Q: Suppose a circuit contains an electromotive force (a battery) that produces a voltage of E(t) volts…

A: We can solve this using differential equation

Q: What are the expected readings of the following in the figure below? (R = 7.60 0, AV = 5.00 V) R Δν…

A: A). ideal ammeter I= 0.327MA B) ideal voltmeter V=0.5V C).ideal ammeter i =0.93Ma      Ideal…

Q: An electron beam consist of 1016 electrons passing through a given cross section n one minute. (a)…

A: Given value--- An electron beam consist of 1016 electrons passing through a given cross section n…

Q: Ex. 53: A potentiometer wire of 5 m long is Connected across a cell of e.m.f. 2 V. Another cell…

A:

Q: The figure below shows a capacitor, with capacitance C = 4.72 µF, and a resistor, with resistance R…

A:

Q: ✓ A potential drop per unit length of wire is 5 x 10-3 V/m. If the e.m.f. of the cell balances…

A: To find-emf of a cell (E)=?Given-Potential drop per unit length VL=5×10-3 V/mBalancing length for…

Q: for the capacitor used C = 1000 uF and R1 = 47 Kohms, calculate the time interval required to charge…

A:

Q: All of the electrical outlets in a room are connected in a single parallel circuit. The circuit is…

A: (a) According to the question the rating of the fuse is 20 A .That simply means the maximum current…

Q: Calculate the diameter of a 8.4-cm length of tungsten filament in a small lightbulb if its…

A:

Q: The resistances in Figure (a) and Figure (b) are all 6.8 Q, and the batteries are ideal 23 V…

A: