Answer to Question #186079 in Electric Circuits for Lianne

Question

Three 30-ohm resistors are connected in parallel across a 60 – volt source.

   a) What is the effective resistance of the circuit?

 

 

 

 

 

   b) Find the total current drawn from the source.

 

 

 

 

 

   c) Find the current through each resistor.

 

Answer 1

$\frac{1}{R_T} = \frac {1}{30} + \frac {1}{30} + \frac {1}{30} = \frac{1}{10} = 0.1$

$R_T =\frac{1}{0.1} = 10ohms$

b.)$I =\frac {V}{R}$

Where

V= Voltage

R= Resistance

I= current

$I =\frac {60}{10}= 6Amps$

c.) $I =\frac {V}{R}$

$IR_1 = \frac{60}{30} = 2A$

$IR_2 = \frac{60}{30} =2A$

$IR_3 = \frac{60}{30} = 2A$