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adding resistors to a string will have the effect of decreasing each resistor voltage drop.

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16y ago

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When 2 resistors are connected in parallel r1r2 are?

Two resistors connected in parallel are 1/2 the sum of their resistance. The resistance of two resistors connected in series is the sum of their resistance. For example: The total resistance of a 100 ohm resistor connected to a 200 ohm resistor in parallel is 100+200 divided by 2 = 150 ohms. The total resistance of a 100 ohm resistor connected to a 200 ohm resistor in series 100+200= 300 ohms.


How should voltmeter be connected to measure the potential difference across a resistor - in series or in parallel?

In parallel.


What will happen to the other resistor if the number of resistor decreases?

the voltage across that resistor will increase if it is in series with the other resistors. the current through that resistor will increase if it is in parallel with the other resistors.


What is the PD across two resistors connected parallel to a battery of emf 6V?

The potential difference across two resistors connected in parallel to a battery with a potential difference of 6 volts is 6 volts. Kirchoff's Voltage Law: The signed sum of the voltage drops in a series circuit is zero. This means that that the two series circuits involving the battery and each resistor have the same voltage across each other, and the series circuit involving the two resistors have the same voltage across each other.


What must be the same for any two resistors that are connected in series?

The current in each.


A 120 ohm resistor a 60 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 volt power source. What is the effective resistance of the three resistors?

The effective resistance of those three resistors in parallel is 20 ohms. And it makes no difference what the power source is, or whether they're even connected to a power source at all. As soon as those three resistors are in parallel, their effective resistance is 20 ohms immediately, even if they're still in the drawer.


What is the relationship between resistors connected in series and the flow of current through them?

When resistors are connected in series, the flow of current through them is the same. This means that the current passing through each resistor is equal, as it has to pass through each resistor in the series circuit.


What is the equivalent resistance of three resistor with 3 ohms connected in star?

There is no 'equivalent resistance' for three resistors connected in star.


When resistors are connected in series then what happens to the watt?

Resistors are rated in wattage so the lowest wattage rating will be the wattage of the series circuit. It will be able to handle that power any more and the lowest wattage resistor could be damaged and fail.Another AnswerWhen two or more resistors are connected in series, the resistor with the lowest resistance will operate at the highest power. If the power developed by a resistor exceeds its rated power, then the resistor may burn out.


What are semiconductor resistors?

Semiconductor resistor is a resistor body formed in a semiconductor substrate. The first and second conductive terminals are electrically connected to the resistor body at opposite ends.


What is the rule for finding the total resistance of a number of resistors connected in series?

If the resistors are in series, then the total resistance is simply the sum of the resistances of each resistor.


Resistors A and B are connected in parallel If resistor B has twice the resistance of A what is the current taken by resistor B?

half of the current flowing thru resistor 1.... V=IR.