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Ohm's Law states that V=I*R where V = voltage, I = current, and R = resistance. So in this case, V = 3kOhm*20mA, or V = 3000*.020, and V = 60 volts.

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Do you need to apply a load to see a voltage drop across a resistor?

You'll see a voltage drop across a resistor if current is flowing through it. It only has to be a part of a complete circuit, i.e. one in which current is flowing.


How are the plus and minus voltage signs determined for resistors?

Resistors have no polarity. The voltage across a resistor is determined by the direction of current flowing through that resistor (and vice versa).


What kind of relationship can be concluded about the voltage difference across a resistor and the curent flowing through it?

Ohm's Law Voltage = Current x Resistance


Which resistor had the smallest current through it when the v was 12v?

To determine which resistor had the smallest current through it when the voltage (v) was 12V, we can apply Ohm's Law (I = V/R). The resistor with the highest resistance (R) will have the smallest current (I) for a given voltage. Therefore, if you know the values of the resistors in the circuit, the one with the highest resistance will have the smallest current flowing through it when 12V is applied.


What is a led resistor?

A LED resistor is a resistor used in conjunction with a light-emitting diode (LED) to limit the current flowing through the LED. It prevents excessive current that can damage the LED, ensuring it operates within its specified voltage and current ratings. The value of the resistor is calculated based on the supply voltage, the forward voltage of the LED, and the desired current. This setup is essential in LED circuits to maintain longevity and functionality.

Related Questions

What is the current drop across the resistor?

The correct question is what is the voltage drop across a resistor or the current flowing through the resistor using Ohm's Law where Voltage = Current x Resistance


Is current is drop when it flowing through the resistor?

Current flows in loops, voltage drops across elements. With relation to current, what flows in, must flow out, so no, current is not dropped across a resistor, it flows through a resistor and voltage is dropped across the resistor.


What is the voltage drop across a resistor of 300 kilo ohm?

What is the amount of current flowing through the resistor? Voltage drop is dependent on the current. Ohm x Amps = Voltage drop


What kind of relationship can be concluded about the voltage difference across a resistor and the current flowing through it?

POWER=VI. V=voltage I= current


Do you need to apply a load to see a voltage drop across a resistor?

You'll see a voltage drop across a resistor if current is flowing through it. It only has to be a part of a complete circuit, i.e. one in which current is flowing.


Can you provide some Ohm's Law practice questions for me to work on?

Here are some practice questions based on Ohm's Law: If a resistor has a resistance of 10 ohms and a current of 2 amperes flowing through it, what is the voltage across the resistor? A circuit has a voltage of 12 volts applied across a resistor with a resistance of 4 ohms. What is the current flowing through the resistor? If a circuit has a current of 0.5 amperes flowing through a resistor with a resistance of 8 ohms, what is the voltage across the resistor? These questions will help you practice applying Ohm's Law to calculate voltage, current, and resistance in electrical circuits.


How are the plus and minus voltage signs determined for resistors?

Resistors have no polarity. The voltage across a resistor is determined by the direction of current flowing through that resistor (and vice versa).


Are resistor drops the voltage or current?

Resistors drop voltage by creating a voltage difference across themselves. This voltage drop is determined by the resistance value of the resistor and the current flowing through it, according to Ohm's Law (V=IR). The current passing through a resistor remains constant if the resistor is in series with other components in a circuit.


Does current flow through a resistor or across a resistor?

Normally through the resistor's internal construction. It flows through any part of the resistor that has low resistance- be it anywere. And then there's this. It might be that one should consider that current flows through a resistor and voltage is dropped across a resistor. Perhaps this is where the question began. The former is fairly straight forward. The latter can be vexing. Voltage is said to be dropped across a resistor when current is flowing through it. The voltage drop may be also considered as the voltage measureable across that resistor or the voltage "felt" by that resistor. It's as if that resistor was in a circuit by itself and hooked up to a battery of that equivalent voltage.


What kind of relationship can be concluded about the voltage difference across a resistor and the curent flowing through it?

Ohm's Law Voltage = Current x Resistance


Why ohm-meter can't read the resistance value when current flowing through a resistor?

ohm meter puts current thru a resistor to measure voltage drop E / I = R if the circuit already has current flowing the numbers are meaningless


What is true of a series circuit that has two resistors?

Which is true of a series circuit that has two resistors?A.The resistors are on different branches of the circuit.B.Neither resistor has current flowing through it.C.One resistor has no voltage across it.D.Both resistors have current flowing through them.