Contents
How do you find the resistance across a terminal?
The value of RS1 is 10 ohm, by using the equation given below: RS= 5 + 5 = 10 ohms. Now the resistance Rpand 5 ohms are connected in series and the equivalent resistance RS2 is given as RS2= 5+5= 10 ohms. Hence the resistance across the terminals A and B is 5 ohms.
What is the equivalent resistor between terminals a and B?
The resistance between terminals a and b in the figure below is 25 ohms.
What are the terminals of wattmeter?
Wattmeter Internal Circuit M terminal is to be connected to the power supply and the L terminal is to be connected to the Load. The two terminals of the voltage or pressure coil are denoted by C and V. The terminal C is to be connected to the phase and the V terminal is to be connected to the neutral.
What kind of resistor has only two terminals?
Some variable resistors have only two terminals: one on an end of the resistor itself, the other attached to the wiper. This type of variable resistor is properly called a rheostat, but most people use the term potentiometer or pot to refer to both two- and three-terminal variable resistors.
How is the resistance of a potentiometer determined?
Some potentiometers have switches incorporated into them so that when you turn the knob all the way to one side or pull the knob out, the switch operates to either open or close the circuit. When the wiper reaches one end of the resistor or the other, the resistance between the center terminal and the terminal on that end is essentially zero.
How do you test the resistance of a meter?
Test the meter . Now, touch the probe tips together. The resistance reading should drop from “OL” to near zero (meaning less than an ohm), and the audible beep should sound. This is what you should see when you put the probes on something that has continuity such as an intact wire or a closed switch.
How does the resistance of a resistor change?
Two of the terminals are permanently fixed on each end of the resistor, but the middle terminal is connected to a wiper that slides in contact with the entire surface of the resistor. Thus, the amount of resistance between this center terminal and either of the two side terminals varies as the wiper moves.