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Recent questions tagged resistance


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A circuit has a resistance of 200 ohms. The resistance of the circuit can be reduced to 120 ohms by adding which of the following to the circuit.
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When a metal becomes a superconductor, there is a tremendous decrease in its:
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When a metal becomes a superconductor, there is a tremendous decrease in its:When a metal becomes a superconductor, there is a tremendous decrease in its: w) total volume x) electrical resistance y) length z) density ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The capacitance of the capacitor is:
1 answer 57 views
A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The capacitance of the capacitor is:A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The capacitance of the capacitor is: w) 2 x 10-2 farads x) 5 x 10-2 fa ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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To convert a galvanometer to a voltmeter, you should add a:
1 answer 22 views
To convert a galvanometer to a voltmeter, you should add a:To convert a galvanometer to a voltmeter, you should add a: w) high resistance in series x) high resistance in parallel y) low resistance in series ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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The potential drop between the terminals of a battery is equal to the battery's EMF when:
1 answer 36 views
The potential drop between the terminals of a battery is equal to the battery's EMF when:The potential drop between the terminals of a battery is equal to the battery's EMF when: w) no current is drawn from the battery x) a very large cu ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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A two farad and a four farad capacitor are connected in series. What single capacitance is "equivalent" to this combination?
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Used normally, a 150-watt, 120 volt light bulb requires how many amps of current?
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In the circuit below, the EMF reading is 12 V. The voltmeter reading over the 4 Ω resistor is 4.8 V. Calculate the internal resistance of the battery.

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What is a capacitor?
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What is a capacitor?What is a capacitor? ...
by MathsGee Platinum
(104,008 points)
asked in Physics Aug 23, 2021
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The uncertainty in the potential difference, $V$ is $3\%$ and the uncertainty in the resistance $R$ is $2\%$. What is the uncertainty in $P$?
1 answer 274 views
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The resistance of an electrical component is measured. The following meter readings are obtained. What is the resistance?
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Suppose we know the voltage is 12 V, and the resistance is 3 Ω. What is the current?
1 answer 71 views
Suppose we know the voltage is 12 V, and the resistance is 3 Ω. What is the current?Suppose we know the voltage is 12 V, and the resistance is 3 Ω. What is the current? ...
by MathsGee Platinum
(104,008 points)
asked in Physics Apr 4, 2021
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Can you explain difference of two squares?
1 answer 346 views
Can you explain difference of two squares?Can you explain difference of two squares? ...
by MathsGee Platinum
(104,008 points)
asked in Mathematics Mar 26, 2021
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When the two resistors are connected in PARALLEL to the same battery, the current through the battery will be …
0 answers 110 views
When the two resistors are connected in PARALLEL to the same battery, the current through the battery will be … Two resistors of equal resistance are connected in SERIES to a battery with negligible internal resistance. The current through the battery is I. ...
by MathsGee Platinum
(104,008 points)
asked in Physics Nov 2, 2020
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I can't understand the polarization please explain it to me ?
1 answer 41 views
I can't understand the polarization please explain it to me ?I can't understand the polarization please explain it to me ? ...
by Student SIlver Status
(10,394 points)
asked in Physics Sep 5, 2020
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Does a capacitor produce AC or DC current? If so, how does it produce that type of current?
0 answers 68 views
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What happens if we hook up a resistor and a capacitor with the same battery in parallel and in series?
1 answer 75 views
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Why are the capacitors with the bigger capacitance have the lower Voltage?
0 answers 73 views
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Is it true that the higher the capacitance, the lower the voltage of a capacitor hooked up in a series?
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Whats the difference between a capacitor and a battery?
0 answers 48 views
Whats the difference between a capacitor and a battery?Whats the difference between a capacitor and a battery? ...
by Student SIlver Status
(10,394 points)
asked in Physics Sep 5, 2020
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Why does a capacitor only allow AC and not DC?
1 answer 145 views
Why does a capacitor only allow AC and not DC?Why does a capacitor only allow AC and not DC? ...
by Student SIlver Status
(10,394 points)
asked in Physics Sep 5, 2020
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Does the potential difference on the capacitor immediately jump to the battery’s potential difference ? Explain the reason for the observed behavior.

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when charging a capacitor how electrons move from +ve terminal to -ve terminal & wthout interruption to the flow. please explain it with an example

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Can you please explain me the difference between resistance and resistivity ?
1 answer 144 views
Can you please explain me the difference between resistance and resistivity ?Can you please explain me the difference between resistance and resistivity ? ...
by Student SIlver Status
(10,394 points)
asked in Physics Sep 5, 2020
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