Question

Determine the following quantities for the circuits shown below:
(a) the equivalent resistance
(b) the total current from the power supply
(c) the current through each resistor
(d) the voltage drop across each resistor and
(e) the power dissipated in each resistor​

Answer 1

Answer:

equivalent resistance=50+30+20ohm

=100ohm

v=IR

I=V/R

I=125/100

I=1.25Ampere....

Answer 2

(a) The equivalent resistance of circuit = 20 + 30 + 50

                                                                = 100 ohm

(b) The total current from the power supply = 125 / 100

                                                                        = 1.25 A

(c) The current through each resistor = 1.25 A

(d) The voltage drop across 20 ohm , 30 ohm and 50 ohm are 25 V , 37.5 V and 62.5 V respectively .

(e) The power dissipated in 20 ohm , 30 ohm and 50 ohm are 31.25 W , 46.875 W and 78.125 W