Contents
What is the purpose of equivalent resistance?
Equivalent resistance is a different way of indicating ‘total’ resistance, which we calculate differently for series and parallel circuits. In a series circuit, the different components are connected in a single, continuous loop. In a parallel circuit, separate branches connect the components.
How should resistors be connected to decrease their equivalent resistance?
(b) The original circuit is reduced to an equivalent resistance and a voltage source. that is less than the smallest of the individual resistances. When resistors are connected in parallel, more current flows from the source than would flow for any of them individually, so the total resistance is lower.
How should the resistance be connected so that the equivalent resistance is increased?
resistors should be connected in series to get maximum resistance. REASON… When connected in series the current has to passes through all the resistors. while in parallel circuit the current pass through all resistors through different paths.
How are three resistors connected in a DC Circuit?
Below is a figure of a DC series circuit with three resistors. The flow of current is shown here by a moving point. Note that this is just a conceptual representation. Suppose three resistors R 1, R 2, and R 3 are connected in series across a voltage source of V (quantified as volts) as shown in the figure.
Why is the current in a series DC Circuit the same?
Hence, it can be concluded that in a series DC circuit, the same current flows through all parts of the electrical circuit. Again according to Ohm’s law, the voltage drop across a resistor is the product of its electrical resistance and the current flow through it. Here, current through every resistor is the same,…
How is the relationship between voltage and resistance expressed?
Power can also be expressed using conductance as: p = i 2 /G = v 2 G. The relationship between Voltage, ( v ) and Current, ( i ) in a circuit of constant Resistance, ( R ) would produce a straight line i-v relationship with slope equal to the value of the resistance as shown.
Again according to Ohm’s law, the voltage drop across a resistor is the product of its electrical resistance and the current flow through it. Here, the current through every resistor is the same, hence the voltage drop across each resistor’s proportional to its electrical resistance value.