- #1

- 119

- 0

a) .4 A, B) 5 A c) 20 A d) 1 A e) none of these

My work

R1 = 5 ohms

R2 = 20 ohms

V = 20 v

I = ?

V = IR

V/R = I = 20 V / 114 ohms = 80 amps

3. Homework Statement [/b]

Two 2 ohm resistors are in parallel. What is their equivilant resistance?

1/2 ohms + 1/2 ohms = 1 ohm. Is this correct?

4)A 20 volt potential is applied across a series combination of a 10 ohm and a 30 ohm resistor. The current in the 10 ohm resistor is a) .5 amps, b) .67 amps c) 1.0 amps d) 2.0 amps

P = I^2R

I = THE SQUARE ROOT OF (R/P)

I = THE SQUARE ROOT OF (10 ohms/20 V)

5) a 120 volt home electrical socket has 3 wires. How many of these wires would give yo ua shock if you were grounded when yo utouched them one wire at a time?

a) one b) two c) three

I think it is one.