# 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.
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.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. w) ...
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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:When a metal becomes a superconductor, there is a tremendous decrease in its: w) total volume x) electrical resistance y) length z) density ...
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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:
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 ...
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To convert a galvanometer to a voltmeter, you should add a:
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 ...
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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: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 ...
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A two farad and a four farad capacitor are connected in series. What single capacitance is "equivalent" to this combination?
A two farad and a four farad capacitor are connected in series. What single capacitance is "equivalent" to this combination?A two farad and a four farad capacitor are connected in series. What single capacitance is &quot;equivalent&quot; to this combination? ...
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Used normally, a 150-watt, 120 volt light bulb requires how many amps of current?
Used normally, a 150-watt, 120 volt light bulb requires how many amps of current?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.
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. In the circuit below, the EMF reading is 12 V. The voltmeter reading over the 4 Ω resistor is&nbsp; 4.8 V. Calculate the internal resistance of the ...
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What is a capacitor?
What is a capacitor?What is a capacitor? ...
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In the circuit below, the battery has an internal resistance $r$ and an emf $\varepsilon$. A variable resistor $R$ is connected in the circuit and the ammeter and voltmeter register readings. In the circuit below, the battery has an internal resistance $r$ and an emf $\varepsilon$. A variable resistor $R$ is connected in the circuit and t ...
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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 $P$?
The uncertainty in the potential difference, $V$ is $3\%$ and the uncertainty in the resistance $R$ is $2\%$. What is the uncertainty in $P$?The power loss $P$ in a resistor is calculated using the formula \P=\dfrac{V^2}{R}\ The uncertainty in the potential difference, $V$ is $3\%$ and ...
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The resistance of an electrical component is measured. The following meter readings are obtained. What is the resistance?
The resistance of an electrical component is measured. The following meter readings are obtained. What is the resistance? 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?
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 &amp;Omega;. What is the current? ...
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Can you explain difference of two squares?
Can you explain difference of two squares?Can you explain difference of two squares? ...
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When the two resistors are connected in PARALLEL to the same battery, the current through the battery will be …
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. ...
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I can't understand the polarization please explain it to me ?
I can't understand the polarization please explain it to me ?I can't understand the polarization please explain it to me ? ...
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Does a capacitor produce AC or DC current? If so, how does it produce that type of current?
Does a capacitor produce AC or DC current? If so, how does it produce that type of current?Does a capacitor produce AC or DC current? If so, how does it produce that type of current? ...
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What happens if we hook up a resistor and a capacitor with the same battery in parallel and in series?
What happens if we hook up a resistor and a capacitor with the same battery in parallel and in series?What happens if we hook up a resistor and a capacitor with the same battery in parallel and in series? ...
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Why are the capacitors with the bigger capacitance have the lower Voltage?
Why are the capacitors with the bigger capacitance have the lower Voltage?Why are the capacitors with the bigger capacitance have the lower Voltage? ...
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Is it true that the higher the capacitance, the lower the voltage of a capacitor hooked up in a series?
Is it true that the higher the capacitance, the lower the voltage of a capacitor hooked up in a series?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?
Whats the difference between a capacitor and a battery?Whats the difference between a capacitor and a battery? ...
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Why does a capacitor only allow AC and not DC?
Why does a capacitor only allow AC and not DC?Why does a capacitor only allow AC and not DC? ...
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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.
Does the potential difference on the capacitor immediately jump to the battery’s potential difference ? Explain the reason for the observed behavior.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