Question

Understand the given resistances values carefully to find out that following resistances belongs to which family of resistors.


1) 470K ± 10%

2) 33k ± 5%

Answer 1

Answer:

Resistors combination and in our example this is 9V.

The equation given for calculating the total voltage in a series circuit which is the sum of all the individual voltages added together is given as:

series resistor voltages

Then series resistor networks can also be thought of as “voltage dividers” and a series resistor circuit having N resistive components will have N-different voltages across it while maintaining a common current.

By using Ohm’s Law, either the voltage, current or resistance of any series connected circuit can easily be found and resistor of a series circuit can be interchanged without affecting the total resistance, current, or power to each resistor.

Resistors in Series Example No1

Using Ohms Law, calculate the equivalent series resistance, the series current, voltage drop and power for each resistor in the following resistors in series circuit.

resistors in series circuit

All the data can be found by using Ohm’s Law, and to make life a little easier we can present this data in tabular form.

Resistance Current Voltage Power

R1 = 10Ω I1 = 200mA V1 = 2V P1 = 0.4W

R2 = 20Ω I2 = 200mA V2 = 4V P2 = 0.8W

R3 = 30Ω I3 = 200mA V3 = 6V P3 = 1.2W

RT = 60Ω IT = 200mA VS = 12V PT = 2.4W

Then for the circuit above, RT = 60Ω, IT = 200mA, VS = 12V and PT = 2.4W