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What else can I help you with?
What is the current through the 150 ohm resistor?
It depends on the voltage applied across it. But the maximum current is limited by the power-rating of the resistor (power divided by the square of the voltage).
How do you convert a electric meter into a ammeter?
To convert an electric meter (usually a voltmeter) into an ammeter, you need to connect a low-resistance shunt resistor in parallel with the meter. This allows a portion of the current to bypass the meter, enabling it to measure the current flowing through the circuit. The shunt resistor's value is calculated based on the maximum current you want to measure and the internal resistance of the meter. Proper calibration is essential to ensure accurate readings.
A 100 ohms resistor carries a maximum current of 400mA what is the minimum power rating this resistor should have?
To find the minimum power rating of a resistor, you can use the formula ( P = I^2 \times R ). Given that the current ( I ) is 400 mA (or 0.4 A) and the resistance ( R ) is 100 ohms, the power is calculated as ( P = (0.4)^2 \times 100 = 16 ) watts. Therefore, the minimum power rating for the resistor should be at least 16 watts to handle the maximum current safely. It's advisable to choose a resistor with a higher rating for added safety and reliability.
What is the effect on the resistance of a carbon composition resistor as the current flow through it increases?
As current flowing through carbin composition resistor increses then resistance will decrese as the function of resistance is to oppose the flow of current.....AnswerA resistor is termed a 'linear' or 'ohmic' device, which means its resistance stays constant over a wide range of current variation -in other words, it obeys Ohm's Law up to the maximum current is designed to handle. If this were not the case, then the resistor would not be suitable for many applications. The maximum current it is designed to carry, before its resistance changes beyond its tolerance, is determined by its physical size, as the larger its surface area, the more efficiently it can dissipate heat.
How you convert galvanometer into ammeter in detail?
By attaching a resistance in parallel connection with the galvanometer. Or when a low resistor connected in parallel with galvanometer ,the galvanometer is converted in ammeter. and the resistor is called shunt resistance.
What is the voltage drop across a 100 W resistor when the electric current flowing through it is measured at 250 mA?
Who can tell? The power rating of a resistor simply tells us the maximum power that resistor is capable of handling; it doesn't tell us anything about the actual power being produced for any given current. So, to find out the voltage drop across that resistor, you will need to find out its resistance, and multiply this value by the current you specify.
What is the power consumed in a 10 k ohm resistor due to a periodic synusoidal current of maximum magnitude 90 mA passing through it?
P=IE What voltage (E) will be dropped across the resistor? Current (I) = .090 A Assuming 90 VAC dropped across the resistor, then P=90 x .090 which = 8.1 Watts.
Explain why a series resistor is necessary when a diode is forward-biased?
A series resistor is necessary when a diode is forward-biased to limit the current flowing through the diode. Without this resistor, the current can increase rapidly due to the diode's low forward voltage drop, potentially exceeding the diode's maximum current rating and causing it to overheat or fail. The resistor helps ensure that the current remains within safe operating limits, thereby protecting the diode and ensuring reliable circuit operation.
How would the hook up 3 resistors in a circuit to get a maximum current?
In series, R = R1 + R2 + R3 + ... The current in a series connection will only have 1 path. The current is the same through each resistor
How designing stabilizing resistor in restricted earth fault relay?
To determine the value of Stabilizing resistor Rs = Vs/Is = If(Rct +2Rl)/Is Where, Rs = resistance value of the stabilizing resistor Vs = voltage at which the relay will operate Is = current flowing through the stabilizing resitor and the relay If = maximum secondary fault current magnitude Rct = internal resistance of the current transformer Rl = resistance of attached wire leads
What is the current flowing through a 200 watt resistor that has a rating of 21 ohms?
The current can't be calculated from the information given in the question.The power rating of a resistor is the maximum power it can dissipate before it overheatsand its resistance possibly changes permanently. The power rating is not the amount ofpower it always dissipates.So, all we really know about the resistor in the question is that its resistance is 21 ohms.And all we can say about the current through it is:Current through the resistor = (voltage between the ends of the resistor) divided by (21).
Formula used to find the maximum current that can be carried by a resistor if resistance and wattage rating is known?
Manipulate the following equation, to make I the subject: P = I2R, where P = power, I =current, and R = resistance.
