Electric Circuits Answers

What is the effective resistance for a parallel circuit containing a 12 V potential and three resistors R1= 3 ohms,

R2=2 ohms and R3= 1 ohm.

What is the circuit (amps) for a parallel circuit containing a 12 V potential and three resistors R1= 3 ohms, R2=2 ohms, and R3= 1 ohm?

What is the voltmeter reading across the R2 resistor in a series circuit containing a 12 V potential and three resistors R1= 3 ohms, R2=2 ohms, and R3= 1 ohm?

What is the voltmeter reading across a 20-ohm resistor connected in series with a 10-ohm resistor and a 60-volt power source?

What is the voltage drop across the 3.0 Q for a parallel circuit containing a 12 V potential and three resistors R1= 3 ohms, R2=2 ohms and R3= 1 ohm

Voltage across / resistor = 1 R = 0.58 A × 7 = 4.06 V

a voltmeter v of 23 k ohm resistance in series with a resistor r across a 230v supply reads 92v. calculate the value of the resistor r 

   Two straight, parallel, current-carrying wires separated by a distance of 5cm contain the same 1000 A current, flowing in similar directions. Determine the force per unit length exerted by the two wires.

Why are there at least two prongs on every electrical plug? If power is traveling in one direction (from the wall to the appliance), why can't there be just one wire carrying it? And don't just say "because circuits need to be closed' - after all, current can flow through a capacitor, and that's an open circuit.

A microwave oven connected across a potential difference of 122 V has a resistance of 49 Ω . What is the current in the microwave oven? Answer in units of A.