a piece of copper wire of resistance R is cut into 10 equal lengths. These parts are connected in parallel. How does the joint resistance of the parallel combination compare with the original resistance of the single wire?
The circuits, P and Q, show two different ammeter-voltmeter methods of measuring resistance. Suppose the ammeter has a resistance of 0.10 ohms and the voltmeter of 3.0 ohms; the ammeter reads 2.5 amps and the voltmeter reads 6.0 volts. What is the uncorrected value of the resistance in each case? What is the value of the resistance in each case?
originakl resistance R
when divided into 10 equal parts
each part = R/10
RNet in parallel = (1/Rnet) = 10./R + 10/R ..................
1/Rnet = 100/R
Rnet = R/100
so ratio of Rnet/R = 1/100 = 0.01
-------------------------
uncorrected value of resistance= 6/2.5 = 2.4 ohm
this is after addition of 0.10 ohm in series and 3 ohms in parallel
so hence let correct value be x
x+0.10||3= 2.4
hence, x+0.10= 12
and x= 11.90 ohm
a piece of copper wire of resistance R is cut into 10 equal lengths. These parts...
A piece of wire has a resistance R. It is cut into two pieces of equal length, and the pieces are twisted together parallel to each other. Part A What is the ratio of the resistance of the resulting wire to R?
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Answer 4 & 5 please! thank
you!
R values =
Resistor value, R1 = 990 Ohms
Resistor value, R2 = 2050 Ohms
4. Connect the 2nd resistor in parallel with the 1st
resistor and connect that combination to the battery.
Measure
the following:
The
current passing through the R1, I1 = ___0.0058____ A
The
current passing through the R2, I2 = ___0.0031____ A
The
current supplied by the battery, I = ___0.0092____ A
Calculate I1 + I2 =...
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All changes saved A Point of Release Equilibrium Position - Equilibrium- Position Point of A sphere of mass mi, which is attached to a spring, is displaced downward from its equilibrium position as shown above left and released from rest. A sphere of mass m2, which is suspended from a string of length I, is displaced to the right as shown above right and released from rest so that it swings as a simple pendulum with small amplitude. Assume...