Question

You are supplied with a battery that has an emf of 10V and a piece of rubber with a resistivity of 8x10^13 m. The rubber has dimensions of 2 cm x 3 cm x 9 cm.

A. If you wanted to use the piece of rubber as a resistor with the lowest possible resistance which faces would you connect the battery to? The 2x3 cm2 , 2x9 cm2 , or 3x9 cm2 sides? Why?

B. Calculate the resistance of the piece of rubber if the battery is connected to the 2x3 cm2 faces. This will be the ‘resistor’ for the following steps.

C. Sketch the arrangement of the battery connected to the 2x3 cm2 ends of the rubber, the resistor.

D. When the resistor is connected to the battery at the 2x3cm2 ends, what is the current through the resistor?

E. What is the potential change across the resistor? F. What is the power dissipated in the resistor?

G. If an identical battery is connect to the first one, what is the emf and the current in the circuit?

Answer #1

You are supplied with a battery that has an emf of 10V and a
piece of rubber with a resistivity of 8x1013 ohm m. The rubber has
dimensions of 2 cm x 3 cm x 9 cm.
A. If you wanted to use the piece of rubber as a resistor with
the lowest possible resistance which faces would you connect the
battery to? The 2x3 cm2 , 2x9 cm2 , or 3x9 cm2 sides? Why?
B. Calculate the resistance of...

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a) Calculate the internal resistance of the battery and the
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(b) What is the total external resistance of this circuit?
(c) What is the current in each bulb?
(d) What is the internal resistance of the battery?

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Phsics Problem,Please show steps.
A) You are
given a battery, which has, of course, a particular
emf and a particular internal resistance
(Rint). You decide to determine its internal resistance
and its emf by connecting an ammeter in series
with a variable resistor across the battery. By varying the
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also use a voltmeter to measure the voltage across the terminals of
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draw...

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Part 1: What is the resistance of the resistor if its area is
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Part 2: By what factor does the power dissipated by the resistor
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Part 3: By what factor does the...

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QUESTION 16
1. A battery has a 24.0 V "emf" but the terminal voltage is 22.0
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QUESTION 17
1. A proton travels south and enters a region that contains a
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Determine the direction of the magnetic field....

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